CN107193136A - The antifog skiing goggle of 3D printing wall attachment effect inner flow passage formula - Google Patents

Abstract

3D printed anti-fog ski goggles with wall-attached inner runners, including frames, lenses, inner runners, air outlets, and elastic bands. The two ends of the inner flow channel are the external air inlet and the external air outlet; the frame is divided into the upper edge of the frame, the lower edge of the frame and the two ends of the frame; the lens is divided into the inner side of the lens and the outer side of the lens; the space surrounded by the inner side of the frame and the lens is the inside of the ski goggles. The remaining space is outside the ski goggles. The lens is installed on the picture frame, and the elastic band is installed on the two ends of the picture frame. An inner runner is arranged on the upper edge of the mirror frame, and the outer air inlet of the inner runner connects the outside of the ski goggles with the inner runner, and the outer air outlet of the inner runner connects the inner runner with the inside of the ski goggles; An airflow outlet is arranged on the lower edge, and the airflow outlet communicates the inside of the ski goggles with the outside of the ski goggles. The ski goggles are made using 3D printing technology.

Description

3D printing wall effect inner runner type anti-fog ski goggles

technical field

The invention relates to the field of 3D printing and ski goggles, in particular to a 3D printing anti-fog ski goggle with wall effect inner flow channel.

Background technique

With the improvement of living standards, more and more people begin to enhance their health and enrich the fun of life through sports. Skiing has now become a sport that everyone likes very much. During skiing, ultraviolet rays in the sun and cold wind will directly irritate the eyes; splashed snow will also fall into the eyes; collisions or falls will cause damage to the face and eyes; therefore, ski goggles are required when skiing to protect the eyes.

When wearing ski goggles while skiing, the water vapor formed by sweating on the face will condense and form fog when it meets the cold mirror surface, affecting the sight of the skier. The current anti-fog solutions mainly include: using double-layer lenses, coating the inside of ski goggles with an anti-fog coating, and using breathable sponges. A closed space can be formed between the double-layer lenses, which can reduce the heat exchange inside and outside the ski goggles to a certain extent, so that the inner ski goggles can maintain a certain degree of warmth and reduce fogging; the anti-fog coating can absorb the water vapor formed by sweating Absorbs water vapor before it forms a mist; breathable sponge permeates water vapor, dissipating it to the outside of the ski goggle.

The production of anti-fog coatings requires some expensive equipment, and performance testing of anti-fog coatings is also required. A mold is used to make a mirror frame. After the production is completed, the mold will be discarded, wasting material. The use of double-layer lenses, anti-fog coating and breathable sponge will undoubtedly increase the cost of making ski goggles, increase the process flow, and increase the production cycle.

The hardware of the 3D printing Coanda effect inner runner type anti-fog ski goggles involved in the present invention consists of a frame, a lens and an elastic force. An inner flow channel is arranged on the mirror frame, and the cohesive jet effect generated on the inner side of the mirror surface when the air flow enters the ski goggle through the inner flow channel is used to prevent fogging. Using FDM (Fused Deposition Manufacturing) 3D printing technology to make ski goggles, the ski goggles can be printed out as a whole, and more importantly, the inner flow channel can also be accurately printed according to the original design data, and the required time is within 10 hours and it can be done. The materials currently used to make ski goggle frames can also be applied in FDM technology. Anti-fog is carried out by using the wall-attached jet effect, without the use of anti-fog coating, double-layer lenses, and breathable sponges, which reduces the cost of making ski goggles, shortens the process, and greatly improves the production cycle. The utilization rate of materials can reach 100%.

Contents of the invention

The purpose of the present invention is to solve the problem of fogging of ski goggles by adopting a new solution of 3D printing, which can reduce the production cost of ski goggles and shorten the production cycle.

To achieve the above object, the technical scheme of the present invention is as follows:

A 3D printed anti-fog ski goggles with a wall-attached effect inner flow channel, including a lens (1), a frame (2), an elastic band (5), an upper edge of the frame (8), a lower edge of the frame (9), and two ends of the frame (10), ski goggles inside (11), ski goggles outside (12), eyeglass outside (13) and eyeglass inboard (14); Described eyeglass (1) is installed on the described picture frame (2); Described picture frame ( 2) The space surrounded by the inside of the lens (14) is the inside of the ski goggles (11), and the remaining space is the outside of the ski goggles (12);

It is characterized in that it also includes an inner flow channel (3), an air outlet (4), an outer air inlet (6) of the inner flow channel, and an outer air outlet (7) of the inner flow channel; the two ends of the inner flow channel (3) They are respectively the external air inlet (6) of the inner runner and the outer air outlet (7) of the inner runner; The inside of the mirror (11) communicates with the outside of the ski goggles (12); The air outlet (7) on the outside of the flow channel connects the inside of the ski goggles (11) with the inner flow channel (3); the air outlet (4) connects the inside of the ski goggles (11) to the outside of the ski goggles (12) together.

Further, the inner flow channel (3) is arranged on the upper edge (8) of the mirror frame, and the air outlet (4) is arranged on the lower edge (9) of the mirror frame.

Further, the inner runner (3) is an arc-shaped channel, and the inner runner (3) is composed of an inner runner (19) with a circular arc cross section and an inner runner (20) with a rectangular cross section, The cross-section of the arc-shaped inner runner (19) is abdc, and the cross-section of the rectangular inner runner (20) is bfed; the height ac and gh of the outer air inlet (6) of the inner runner is 1.7-2mm The lengths ag and ch of the upper and lower edges are 80-85mm; the radian of the arc-shaped inner runner (19) in the section, that is, the arc of the arc ab and cd, is 75-90 degrees; the section is rectangular The width bd and ef of the inner runner (20) are 1.2-1.5mm, and the height de and bf are 6.5-7mm; The upper edges are parallel with a distance of 1-2mm.

Further, the air outlet (4) has a width of 1-2mm and passes through the lower edge (9) of the mirror frame.

Further, the elastic band (5) is installed on both ends of the mirror frame (10).

The lens is mounted on the frame, and the elastic band is mounted on both ends of the frame.

Further, the inner flow channel is arranged on the mirror frame, wherein the inner flow channel external air inlet at one end of the inner flow channel communicates the inner flow channel with the outside of the ski goggles, and the inner flow channel The air outlet outside the channel communicates the inner channel with the inside of the ski goggles.

Further, the airflow outlet is provided on the lower edge of the mirror frame, and the airflow outlet communicates with the inside of the ski goggles and the outside of the ski goggles.

Further, since the size of the inner flow channel and the air outlet is small, it is difficult to manufacture them by mold processing, so the production of the ski goggles will be printed by 3D printing.

When the outside air enters the inner runner through the outer air inlet of the inner runner, and enters the inside of the ski goggles through the outer air outlet of the inner runner, due to the Coanda jet effect, the air entering the inside of the ski goggles can Attached to the inner side of the lens, an air curtain is formed on the inner side of the lens. When the hot and humid gas from the face encounters the air curtain, it will mix with the air curtain and flow out of the ski goggles through the air outlet, thus effectively achieving Mirror anti-fog effect.

By using the ANSYS numerical simulation software to simulate and calculate the anti-fog effect of the 3D printed wall effect inner runner anti-fog ski goggles, the results prove that it is feasible to use the inner runner for anti-fog.

When simulating the anti-fog effect of the 3D printed Coanda effect inner runner type anti-fog ski goggles, the air flows into the ski goggles through the inner runner, and flows out of the ski goggles through the air outlet, so The simulated object is the area formed by the three parts of the inner runner, the inside of the ski goggles and the air outlet, and the frame, lens, and elastic band do not participate in the simulation calculation. Therefore, the area composed of the inner runner, the interior of the ski goggles, and the air outlet is extracted, and the cross-sectional shape of the extracted area is shown in FIG. 4 . The speed cloud map after simulation calculation is shown in Fig. 5.

In Fig. 4, the maximum horizontal distance between (15) and (18) is 30mm. The velocity cloud diagram shows that the flowing air flow forms a 10mm thick air curtain on the interface (15) between the inner side of the lens (14) and the inner side (11) of the ski goggles, and the flow velocity of the gas is less than 0.2m/s. Therefore, the simulation calculation results show that it is feasible to use the inner flow channel for anti-fog.

For the production of ski goggles, 3D printing will be used to print them as a whole. The millimeter-scale structure of the inner runner can also be precisely produced by using 3D printing technology; using 3D printing technology to make ski goggles can save costs and shorten the production cycle, and can be printed within 10 hours. The utilization rate can reach 100%.

Description of drawings

In order to illustrate the embodiments of the present invention more clearly, the following briefly introduces the drawings required for the embodiments or the description of the prior art.

Figure 1 is a schematic diagram of 3D printing wall-attached effect inner runner ski goggles;

Figure 2 is a schematic diagram of the inner flow channel;

Figure 3 is a cross-sectional view of the 3D printed wall-attachment effect inner runner type ski goggles;

Fig. 4 is a schematic diagram of the area composed of three parts: the inner flow channel, the inside of the ski goggles, and the air outlet.

Figure 5 is the speed cloud map after simulation calculation.

Remark 1:

15 the interface between the inside of the lens (14) and the inside of the ski goggles (11);

16 the interface between the lower edge (9) of the mirror frame and the interior (11) of the ski goggles;

17 The interface between the upper edge (8) of the mirror frame and the interior (11) of the ski goggles;

18 the interface between the inside (11) of the ski goggles and the outside (12) of the ski goggles;

19 arc-shaped inner runner, the section is abdc;

20 Rectangular inner runner with a section of dbfe.

Remark 2: The two edges ag, ch of the outer air inlet (6) of the inner runner and the two edges fn, em of the outer air outlet (7) of the inner runner are curved curves. In order to show the effect, the degree of curvature of the edges ag, ch, fn, em in Fig. 1 is not particularly obvious.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in the accompanying drawings 1-5, the 3D printed inner runner type anti-fog ski goggles disclosed by the present invention include a lens 1, a frame 2, an inner runner 3, an air outlet 4, an elastic band 5, and an outer air inlet of the inner runner 6. The outer air outlet of the inner runner 7, 8 the upper edge of the frame, the lower edge of the frame 9, the two ends of the frame 10, the inside of the ski goggle 11, the outside of the ski goggle 12, the outside of the lens 13, and the inside of the lens 14.

The picture frame 2 is divided into three parts: the upper edge 8 of the picture frame, the lower edge 9, and the two ends 10 of the picture frame. The inner runner 3 is set on the upper edge 8 of the picture frame, and the two ends of the inner runner 3 are respectively the outer air inlet 6 of the inner runner and the outer air outlet 7 of the inner runner; the air outlet 4 is arranged on the lower edge 9 of the picture frame.

The lens 1 is installed on the frame 2, and the lens 1 is divided into two parts: the inner side of the lens 14 and the outer side of the lens 13. The space formed by the picture frame 2 and the inside 14 of the eyeglass is the inside 11 of the ski goggles, and the rest of the space is the outside 12 of the ski goggles.

The outer airflow inlet 6 of the inner runner connects the inner runner 3 with the outside 12 of the ski goggles, and the outer airflow outlet 7 of the inner runner connects the inner runner 3 with the inside 11 of the ski goggles. The airflow outlet 4 connects the inner 11 of the ski goggles and the outer 12 of the ski goggles.

The two ends of elastic band 5 are installed on picture frame two ends 10.

Since there is a certain horizontal distance between the outer air outlet 7 of the inner runner and the inner side 14 of the lens, when the outer air flows through the outer air inlet 6 of the inner runner, flows through the inner runner 3, and then enters the interior 11 of the ski goggles through the outer air outlet 7 of the inner runner. Finally, the external air flow will flow on the inner side 14 of the lens, and an air curtain will be generated on the inner side 14 of the lens, thereby forming a Coanda jet effect. When the hot and humid gas from the face encounters the air curtain, it will mix with the air curtain and flow out of the ski goggles through the air outlet 4, thereby effectively achieving the anti-fog effect of the mirror surface.

The present invention is simple in structure, and the whole is made up of frame, lens and elastic band. The purpose of anti-fogging can be realized only by setting some inner flow channels capable of producing Coanda effect on the upper edge of the mirror frame, so the present invention has strong practicability.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (5)

1. a kind of antifog skiing goggle of 3D printing wall attachment effect inner flow passage formula, including eyeglass (1), picture frame (2), elastic band (5), picture frame Upper edge (8), picture frame lower edge (9), picture frame two ends (10), (11) inside skiing goggle, (12) outside skiing goggle, on the outside of eyeglass (13) and On the inside of eyeglass (14)；The eyeglass (1) is arranged on the picture frame (2)；The sky that (14) are surrounded on the inside of the picture frame (2) and eyeglass Between for (11) inside skiing goggle, remaining space be outside skiing goggle (12)；

Characterized in that, also including inner flow passage (3), air stream outlet (4), inner flow passage outer gas stream entrance (6), inner flow passage outside gas Flow export (7)；The two ends of the inner flow passage (3) are respectively outside the inner flow passage outer gas stream entrance (6) and the inner flow passage Air stream outlet (7)；The inner flow passage (3) set on the picture frame (2), (11) and skiing goggle inside described skiing goggle Outside (12) are connected together；The inner flow passage outer gas stream entrance (6) connects (12) outside skiing goggle and the inner flow passage (3) Lead to together, (11) inside skiing goggle and the inner flow passage (3) are connected together by the inner flow passage outer gas stream outlet (7)； (12) outside (11) inside skiing goggle and skiing goggle are connected together by the air stream outlet (4).

2. the antifog skiing goggle of 3D printing wall attachment effect inner flow passage formula according to claim 1, it is characterised in that the interior stream Road (3) is arranged on the picture frame along on (8), and the air stream outlet (4) is arranged in picture frame lower edge (9).

3. the antifog skiing goggle of 3D printing wall attachment effect inner flow passage formula according to claim 1, it is characterised in that the interior stream Road (3) is circular arc passage, and inner flow passage (3) is the inner flow passage (19) of circular arc and the inner flow passage (20) of rectangular cross-section by section Combine, section is that inner flow passage (19) of circular arc its section is abdc, and inner flow passage (20) of rectangular cross-section its section is bfed；Inner flow passage outer gas stream entrance (6) height ac, gh is 1.7-2mm, and length ag, ch of two edges is 80-85mm up and down； The section is the radian of the radian, i.e. camber line ab, cd of the inner flow passage (19) of circular arc, is 75-90 degree；The rectangular cross-section Inner flow passage (20) width bd, ef be 1.2-1.5mm, height de, bf be 6.5-7mm；The inner flow passage outer gas stream outlet (7) edge em is parallel with the top edge of (14) on the inside of the eyeglass, and distance is 1-2mm.

4. the antifog skiing goggle of 3D printing wall attachment effect inner flow passage formula according to claim 1, it is characterised in that the air-flow The width of (4) is exported in 1-2mm, picture frame lower edge (9) described in insertion.

5. the antifog skiing goggle of 3D printing wall attachment effect inner flow passage formula according to claim 1, it is characterised in that the elastic force Band (5) is arranged on the picture frame two ends (10).