JP2020039790A - Light irradiation device for photocurable resin - Google Patents

Abstract

To obtain a light irradiation device for photocurable resin comprising a mechanism for making light for curing photocurable resin hardly exposed to a human body.SOLUTION: A light irradiation device for photocurable resin comprises: a body part comprising, on its undersurface side, a light source for radiating light for curing photocurable resin; and support means for supporting the body part. The body part is a frame having a rectangular outer shape and has, as the support means, four tabular leg parts erected at marginal parts of four sides of the body part so as to surround a lower space of the body part. The tabular leg parts reduce or intercept light from the light source in its whole wavelength region or a specific wavelength region.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a light irradiation device for a photocurable resin for curing a photocurable resin that is cured by receiving light irradiation such as near ultraviolet rays.

  In nail art, etc., after applying a light-curing resin that cures with light containing ultraviolet light to the nails of hands and toes, the application area is irradiated with light containing ultraviolet light from an LED light to form a protective film on the nails. There has already been proposed an LED light device for curing and forming (see, for example, Patent Document 1).

  An ultraviolet light used for curing a conventional ultraviolet curable resin has an open irradiation range and may be exposed to the human body. Ultraviolet rays are high-energy light rays having a short wavelength, and there are various harmful effects of ultraviolet rays on the human body.

  For example, when the cornea of the eye is exposed to ultraviolet rays, the cornea may be inflamed, causing severe eye pain and hyperemia, and the accumulation of damage may cause cataract. In addition, when the skin is exposed to ultraviolet rays, the skin loses its elasticity, promotes aging, and oxidizes melanin pigment to turn brown. It has also been pointed out that accumulation of damage may cause skin precancers, skin cancers and the like.

Utility Model Registration No. 3180139

  In recent years, in order to reduce the effects of exposure of the human body to ultraviolet light, photocurable resins that cure with near-ultraviolet light, which is close to visible light even in the ultraviolet region, have been used. The use of a cured resin is being studied, and the development of a photocured resin is also being carried out for a while.

  However, even if near-ultraviolet light or high-energy visible light, which has less influence on the human body, is used, it is needless to say that exposure to the human body has a weak but adverse effect. For example, even with blue light contained in high-energy visible light having a lower energy amount than ultraviolet light, there is a problem of adverse effects on the human body.

  SUMMARY OF THE INVENTION It is an object of the present invention to provide a light irradiation device for a photocurable resin, which has a mechanism in which light for curing the photocurable resin is hardly exposed to a human body.

The light irradiation device for a photocurable resin according to the invention described in claim 1 includes a main body having a light source for irradiating light to cure the photocurable resin on a lower surface side, and a support unit that supports the main body. In the light irradiation device for photocurable resin provided,
The main body is a housing having a rectangular outer shape,
The supporting means includes four plate-like legs standing on four edges of the rectangular side of the main body so as to surround a lower space of the main body,
The plate-like leg portion is configured to reduce or block an entire wavelength region or a specific wavelength region of the irradiation light from the light source.

  According to a second aspect of the present invention, there is provided a light irradiation device for a photocurable resin, wherein each of the four plate-like legs standing on the main body according to the first aspect has the main body and two fulcrums. And is locked so as to be foldable.

  According to a third aspect of the present invention, there is provided a light irradiation device for a photo-curing resin, wherein each of the four plate-like legs standing on the main body according to the first or second aspect is arranged with respect to the main body. And is detachably locked.

  According to a fourth aspect of the present invention, there is provided a light irradiation device for a photocurable resin, wherein the four plate-shaped legs according to any one of the first to third aspects connect adjacent legs. It is characterized by comprising a connecting means.

  ADVANTAGE OF THE INVENTION This invention has the effect that the light irradiation apparatus for photocurable resins provided with the mechanism which hardly exposes the light which hardens a photocurable resin to a human body can be obtained.

It is a conceptual diagram of one Example of the light irradiation apparatus for photocurable resins of this invention. FIG. 2 is an explanatory diagram showing a more specific configuration at the time of folding of the device of FIG. 1. FIG. 3 is an explanatory diagram showing a state in which a short leg of FIG. 2 is erected. FIG. 3 is an explanatory diagram showing a state in which a short side leg and a long side leg of FIG. 2 are erected. FIG. 3 is an explanatory diagram illustrating a configuration of a short side leg portion of FIG. 2. FIG. 3 is an explanatory diagram illustrating a configuration of a long-side leg of FIG. 2. FIG. 5 is an explanatory view showing a state in which a short side leg of FIG. 4 is removed. FIG. 3 is an explanatory diagram illustrating an internal configuration of a main body in FIG. 2. FIG. 9 is an explanatory view showing a state in which four legs are erected on the main body of FIG. 8. FIG. 3 is an explanatory view showing a configuration of a leg in a standing state of the light irradiation device for a photocurable resin of FIG. 2. FIG. 3 is an explanatory diagram showing fitting between a long side leg and a short side leg of FIG. 2. FIG. 3 is two flowcharts of an irradiation control step by a program controlled by a control unit in FIG. 1.

  According to the present invention, in a light irradiation device for a photocurable resin including a main body portion provided with a light source for irradiating light for curing the photocurable resin on a lower surface side, and a support means for supporting the main body portion, an outer shape as the main body portion is provided. Is a rectangular casing, and is provided with four plate-like legs standing on four edges of the rectangular shape of the main body so as to surround a lower space of the main body as support means, The legs reduce or shield the entire wavelength region or the specific wavelength region of the irradiation light from the light source. This makes it possible to obtain a light irradiation device for a photocurable resin having a mechanism in which light for curing the photocurable resin is not easily exposed to the human body.

  That is, in the present invention, the lower part of the main body portion, which is the irradiation range, is entirely irradiated with light so that light from a light source that irradiates light for curing a photocurable resin such as an LED lamp is not carelessly exposed to the human body. The design is designed to cover the wavelength region or the specific wavelength region with a plate-like leg for reducing or blocking the wavelength region and to prevent irradiation light from leaking.

  The light for curing the photocurable resin in the present invention may be any light including light having a wavelength for curing the photocurable resin. What is necessary is just to select according to the kind of photocurable resin irradiated. More specifically, it refers to an ultraviolet region, near-ultraviolet light close to visible light even in the ultraviolet region, and high-energy visible light close to the ultraviolet region such as blue light.

  The light for curing the photocurable resin may be light having a wide wavelength such as light from a fluorescent tube as a light source, or may be light that has passed through a filter that blocks a specific wavelength region from light having a wide wavelength. Using an LED that irradiates the peak wavelength of as a light source can be manufactured at lower cost. Further, in order to change the type of the photocurable resin to be cured and the curing state, preferably, two or more types of LED light sources having different peak wavelengths may be used.

  In particular, irradiation with short-wavelength light causes a rapid reaction, and irradiation from the beginning tends to shrink after curing, while irradiation with long-wavelength light causes a slow reaction and the effect of oxygen on the surface of the photocurable resin that inhibits curing. The surface was sometimes sticky. For this reason, two or more types of LED light sources having different peak wavelengths are controlled by the control unit in accordance with the irradiation amount of the long wavelength light and the short wavelength light in accordance with the irradiation control step selected from the two or more control steps stored in advance. By controlling the irradiation amount, shrinkage of the photocurable resin after curing, stickiness of the surface due to oxygen inhibition, distortion after curing, and cracks at the end can be eliminated.

  As the plate-like legs of the present invention, those that block light itself including light having a wavelength that cures the photocurable resin, or those that reduce or block light components in a wavelength region that is harmful to the human body Should be fine. Further, a part of the four plate-shaped legs may be formed as a transparent plate for reducing or blocking light components in a wavelength region considered to be harmful to the human body, or all or one of the four plate-shaped legs may be used. A small window capable of observing the inside may be opened in the plate-like leg portion of the portion, and a transparent plate for reducing or shielding light components in a wavelength region considered to be harmful to the human body may be attached to the small window.

  The inner wall surfaces of the four plate-like legs are preferably made of a material that reflects light in a wavelength region that cures the photocurable resin in light emitted from the light source of the main body, or The upper surface of the wall surface may be coated. As a result, the directly irradiated light and the reflected light can be used, and the photocurable resin can be efficiently cured even with a small amount of light.

  In addition, the plate-shaped legs of the present invention are configured to be erected downward from the main body portion when used to cover the periphery of the lower portion of the main body portion, but when not in use, individual legs can be folded. With this configuration, space saving can be achieved. Specifically, each of the four plate-like legs is locked to the main body by two fulcrums, whereby the four plate-like legs can be folded below the main body. In a specific embodiment, the height of the entire device is 4.7 cm when the legs are standing, and 1.9 cm when folded.

  Further, preferably, each of these four plate-like legs can be removed according to the object to be cured. As a specific attachment / detachment structure, any mechanism may be used as long as two fulcrums that are locked to the main body of the above-described plate-like leg are detachable from the main body. In order to support the main body of the irradiation device, at least two opposing plate-shaped legs need only be erected. Therefore, one or two opposing legs of the four plate-shaped legs can be removed at the same time.

  In addition, with respect to the adjacent plate-shaped leg cans of the present invention, measures are taken to eliminate the gap so that light for curing the photocurable resin does not leak from the gap. For example, a protruding portion and a groove portion into which the protruding portion fits may be formed so that edges of adjacent plate-shaped legs are fitted to each other, and more preferably, adjacent plate-shaped legs are connected to each other. Connection means for performing the connection. More specifically, one plate-like leg of an adjacent plate-like leg is formed with a protruding portion on which the other plate-like leg can get over. It is sufficient to form a projection and a groove in which the edges of the other adjacent plate-shaped leg are fitted.

  With respect to the plate-like leg of the present invention, a folding hook for locking the plate-like leg overlapping the outside and the main body so as to maintain this state when the four plate-like legs are folded. Stop means may be provided. Specifically, it is only necessary to provide a projection that extends toward the main body portion on the leg that is outside when folded, and a fitting hole into which the projection is fitted when folded.

  Further, with respect to the plate-like legs of the present invention, a stand-up latch means for locking the individual legs and the main body so as to maintain the standing state when the individual plate-like legs are erected. May be provided. Specifically, a projecting portion provided on the fulcrum-side end surface of the plate-like leg which comes into contact with the main body when the plate-like leg stands, and this projecting portion is fitted to the main body at the time of standing. What is necessary is just to provide the fitting hole which fits in.

1. Device Structure FIG. 1 is a conceptual diagram of one embodiment of a light irradiation device for photocurable resin of the present invention. FIG. 2 is an explanatory view showing a configuration of an embodiment of a light irradiation device for a photocurable resin according to the present invention when folded. FIG. 2A is a plan view, FIG. 2B is a perspective view, FIG. It is a back view of only a main part. FIG. 3 is an explanatory view showing a state in which the short side legs of FIG. 2 are erected, FIG. 3A is a plan view, and FIG. 3B is a perspective view. FIG. 4 is an explanatory view showing a state in which the short side leg and the long side leg of FIG. 2 are erected, FIG. 4A is a plan view, and FIG. 4B is a perspective view.

  5A and 5B are explanatory diagrams showing the configuration of the short side leg portion in FIG. 2, wherein FIG. 5A is a plan view, FIG. 5B is a perspective view, FIG. 5C is a front view, and FIG. 6A and 6B are explanatory views showing the configuration of the long-side leg portion of FIG. 2. FIG. 6A is a plan view, FIG. 6B is a perspective view, FIG. 6C is a front view, and FIG. FIG. 7 is an explanatory view showing a state where the short side legs of FIG. 4 are removed, wherein FIG. 7A is a plan view and FIG. 7B is a perspective view.

  FIG. 8 is an explanatory view showing the internal configuration of the main body in FIG. 2, wherein FIG. 8A is a plan view and an enlarged view of the main part, and FIG. 8B is a perspective view and an enlarged view of the main part. 9 is an explanatory view showing a state in which four legs are erected on the main body in FIG. 8, FIG. 9A is a plan view and an enlarged view of main parts, and FIG. 9B is a perspective view and an enlarged view of main parts. FIG. 10 is an explanatory view showing the configuration of the legs in the standing state of the light irradiation device for a photocurable resin of FIG. 2, wherein FIG. 10A is a bottom view, FIG. 10B is a sectional view taken along line AA of FIG. It is an enlarged view of a part. FIG. 11 is a plan view showing the engagement between the long side leg and the short side leg of FIG. 2, an enlarged view of the main part, and an enlarged view of the main part in the locked state.

  As shown in FIGS. 1 and 2, the light irradiation device 10 for a photocurable resin of the present embodiment is provided with a rectangular main body 11 and a support means for supporting the main body 11 on the inner edge of the short side of the rectangle. A pair of plate-shaped short side legs 41 and a pair of plate-shaped long side legs 51 disposed on the inner edge of the long side of the rectangle. . The upper surface of the main body 11 is provided with an operation switch 12 for operating a program of the irradiation control process and for starting the program and the like, and the display unit 13. The lower surface of the main body 11 is provided with ten LED lights 14. .

  The LED light 14 is not only one kind, but also disperses and arranges an LED light in which long wavelength light has a peak wavelength in 360 nm to 440 nm and an LED light in which short wavelength light has a peak wavelength in 300 nm to 400 nm. Of the LED light 14 is controlled by a control unit 15 disposed in the main body 11. It should be noted that one LED light 14 may use an LED light capable of selecting long-wavelength light and short-wavelength light, and the control unit 15 may switch and use long-wavelength light and short-wavelength light.

  Further, the control unit 15 may include various safety devices. For example, a temperature sensor may be arranged near the LED lamp 14, and a safety device may be provided that forcibly stops irradiation when the temperature reaches 80 ° C. or more. Alternatively, a speaker or the like may be laid in the control unit 15, and an end chime may be issued when driving is completed in accordance with the irradiation control process stored in the storage unit 16.

  As shown in FIGS. 3 and 4, the four plate-like legs 41 and 51 can shift from the folded state to the standing state. Specifically, each of the plate-shaped legs 41 and 51 disposed at the opposing positions is rotatably hooked to the inner edges of four sides of the rectangular shape of the main body 11 at two fulcrums 42 and 52. I have. In the folded state, a pair of plate-like legs 51 disposed on the inner edge of the long side of the rectangle of the main body 11 are inside, and a pair of plate-like legs disposed on the inner edge of the short side of the rectangle of the main body 11. Is disposed outside. A pair of locking projections 43 are provided at the ends of the pair of plate-shaped legs 41 on the opposite sides of the fulcrum 42, and the locking holes 19 are formed at opposing positions when the main body 11 is folded. The folded state can be maintained by inserting the hooking projection 43 into the hook and locking it.

  The four plate-shaped legs 41 and 51 which pivotally move at the fulcrums 42 and 52 to open and close between a folded state and a standing state are detachable from the main body 11. More specifically, the fulcrums 42 and 52 of the four plate-like legs 41 and 51 are detachable from the corresponding fulcrums 21 and 26 of the main body 11.

  As shown in FIG. 5, the short side leg 41 arranged at the inner edge of the rectangular short side of the main body 11 is formed by projecting two fulcrums 42 inside the upper edge. At the time of attachment, as shown in FIGS. 8 and 9, the fulcrum support portion 21 of the main body 11 is inserted into the corresponding fulcrum support portion 21, and two fulcrums 42 are simultaneously inserted from the insertion openings 22 of the fulcrum support portion 21, and are inclined obliquely. Simultaneously pressed from the inside to the outside along the slider portion 23, the two fulcrums 42 simultaneously ride on the support position 24 and are rotatably locked.

  At the time of removal, by moving the leg 41 toward the center of the main body 11 from the state where the two fulcrums 42 are rotated at the support position 24, the two fulcrums 42 are simultaneously moved from the state where the two fulcrums 42 ride on the support position 24. It is moved to the slider section 23. In this state, the two fulcrums 42 are moved to the insertion port 22, and the short side leg 41 is removed.

  Similarly, as shown in FIG. 6, the long side leg 51 disposed at the inner edge of the long side of the rectangle of the main body 11 also has two fulcrums 52 protruding inside the upper edge, and the main body 8 and 9, two fulcrums 52 are simultaneously inserted through the insertion holes 27 of the fulcrum support 26, and the obliquely inclined slider 28 is inserted inside the fulcrum support 26 as shown in FIGS. Simultaneously, the two fulcrums 52 are simultaneously ridden on the support position 29 and are rotatably locked.

  When removing, the two fulcrums 52 are simultaneously moved to the support position 29 by moving the leg 51 toward the center of the main body 11 from the state in which the two fulcrums 52 are rotatably supported at the support position 29. It is moved to the slider part 28 from the riding state. In this state, the two fulcrums 52 are moved to the insertion slot 27, and the long side leg 51 is removed.

  With these mechanisms, any of the four plate-like legs 41 and 51 can be removed. In this case, in order to make the main body 11 of the light irradiation device 10 for a photo-curing resin stand, at least two opposing plate-like legs should stand. Therefore, one or two opposing legs of the four plate-shaped legs can be removed at the same time. For example, as shown in FIG. 7, an example is shown in which the short side leg portion 41 is removed from the four plate-like leg portions 41, 51.

  Further, the four plate-shaped legs 41 and 51 are rotated at the support positions 29 of the fulcrum support portions 21 and 26 with respect to the fulcrums 42 and 52, respectively, when the legs are changed from the closed state to the standing state. , Fixed so that there is no wobble. More specifically, as shown in the enlarged view of FIG. 10, the upper edges of the plate-like legs 41 arranged on the inner edges of the rectangular short sides of the main body 11 are located near the inner sides of the two fulcrum support portions 21 of the main body 11. A ride-up projection 20 formed on the opening edge is formed on the opening. The leg portions 41 and 51 are fixed in a standing state by getting over these riding protrusions 20. Note that a similar riding projection 25 is also formed on a plate-like leg 51 disposed on the inner edge of the long side of the rectangle of the main body 11.

  Further, with respect to each of the four plate-shaped legs 41 and 51, a protrusion and a groove in which the protrusion is fitted so that the edges of the adjacent plate-shaped legs 41 and 51 fit together. It is formed. Specifically, in the present embodiment, both sides of the short side leg 41 are bent so as to face the long side leg 51, and the outer peripheral surface is protruded toward the long side leg 51, The inner peripheral surface is recessed and has an L-shaped cross section. The long side leg portion 51 has an outer peripheral surface portion recessed and an inner peripheral surface portion projected so as to match the L-shaped cross section of the short side leg portion 41.

  At the end on the opposite side of the fulcrum 42 of the short side leg 41, a locking projection 43 is provided so as to project therefrom. And are fitted by being fitted into the recessed inner peripheral surface of the short side leg 41. In other words, as shown in FIG. 11, the protruding inner peripheral surface of the long side leg portion 51 extends over the short side leg portion 41 in the standing state, so that the leg portion 41 bends over the locking projection 43. Into the recessed inner peripheral surface of the short side leg.

  The four legs 41, 51 cross over the locking projections 43 of the short side leg 41, and the convex inner peripheral surface of the long side leg 51 fits therein, so that the light curable resin is removed from the gap. The gap can be eliminated so that light for curing does not leak. When the four legs 41 and 51 are deployed after the legs are folded, the short side leg 41 is provided with a recess 44 at the center of the lower end so that a finger can be easily inserted. The leg 51 has a hole 54 in the center.

2. Control Unit FIG. 12 is a flowchart of two irradiation control steps by a program controlled by the control unit of FIG. In the present embodiment, the two types of LED lights 14 as light sources are controlled to be ON-OFF driven by the control unit 15. As the light for curing the photocurable resin, a long wavelength light having a peak wavelength in a long wavelength region and a short wavelength light having a peak wavelength in a short wavelength region with respect to the long wavelength light in the wavelength region for curing the photocurable resin. The control unit 15 controls the irradiation amount of the long wavelength light and the irradiation amount of the short wavelength light by the light source in accordance with the irradiation control process selected from two or more types of control processes stored in advance. That is, the control by the control unit 15 is performed in accordance with the irradiation control process by two or more types of programs stored in the storage unit 16 in advance.

  Preferably, the irradiation amount of the short-wave light is controlled to be smaller than the irradiation amount of the long-wave light in the early stage of the curing, and the irradiation amount of the short-wave light may be increased in the later stage of the curing. More specifically, as one of the irradiation control steps by a program stored in the storage unit 16 in advance by the control unit 15, for example, after irradiating only long-wavelength light for 30 to 90 seconds, the long-wavelength light and the short-wavelength light are irradiated. When irradiation is performed for 30 to 360 seconds, the control unit 15 performs shrinkage after curing of the photocurable resin, sticky surface due to oxygen inhibition, distortion after curing, and Cracks in the part can be eliminated.

  More specifically, as one of the irradiation control steps, at the start of curing, after irradiating only long wavelength light to slowly cure the entire photocurable resin, irradiating short wavelength light in addition to long wavelength light Control to eliminate stickiness on the surface of the photocurable resin. More specifically, in order to eliminate shrinkage after curing of the photocurable resin, stickiness of the surface due to oxygen inhibition, distortion after curing, and cracks at the ends, for example, as shown in the flow diagram of FIG. After irradiating only long-wavelength light for 30 seconds, an irradiation control step 01 of irradiating long-wavelength light and short-wavelength light for 60 seconds is performed. The irradiation time of only the long-wavelength light and the irradiation time of the long-wavelength light and the short-wavelength light can be changed by using the display unit 13 and the operation switch 12 or by connecting a separate display / operation panel. May be additionally stored.

  In the irradiation control step 01, control for stopping irradiation of long-wavelength light during irradiation of short-wavelength light may be performed. In this case, the irradiation time of only the long wavelength light may be lengthened, and the irradiation time of only the short wavelength light may be adjusted. After the irradiation with only the short wavelength light, the irradiation with only the long wavelength light may be performed again. As a result, the driving time becomes longer, but the maximum power consumption of the device is reduced and the heat generation is also reduced.

  Further, as another irradiation control step, the irradiation amount of the short-wavelength light in the initial stage of curing may be made smaller than the irradiation amount of the long-wavelength light by irradiating continuous long-wavelength light and intermittent short-wavelength light. By shortening the intermittent interval of the short-wavelength light toward the later stage of curing, shrinkage of the photocurable resin after curing, stickiness of the surface due to oxygen inhibition, distortion after curing, and cracks at the ends can be eliminated. For example, as shown in the flowchart of FIG. 12B, after irradiating only long-wavelength light for 5 seconds, irradiate long-wavelength light and short-wavelength light for 5 seconds, and stop short-wavelength light for 5 seconds. An irradiation control step 02 that is repeated twice is performed.

  Regarding the intermittent irradiation of short-wavelength light in the irradiation control step 02, shrinkage after curing of the photocurable resin, stickiness of the surface due to oxygen inhibition, and curing even if the intervals are different between the initial curing stage and the late curing stage. Subsequent distortion and cracks at the ends can be eliminated. For example. After irradiating only the long-wavelength light for 3 seconds, irradiating the long-wavelength light and the short-wavelength light for 3 seconds and stopping the short-wavelength light for 3 seconds, the operation is repeated five times. Another irradiation control step of repeating the operation of irradiating for 10 seconds and stopping the short-wavelength light for 10 seconds five times may be performed. As described above, the light irradiation device for a photocurable resin according to the present embodiment can be used not only for nail art but also for manufacturing accessories and the like using the photocurable resin.

10. Light irradiation device for photocurable resin,
11 ... body part,
12 ... operation switches,
13 Display unit,
14 ... LED light,
15 ... Control unit,
16 ... storage unit,
19 ... hook holes,
20 ... Riding protrusion,
21 fulcrum support,
22 ... insertion slot,
23 ... Slider part,
24 ... support position,
25 ... Riding protrusion,
26 ... fulcrum support,
27 ... insertion slot,
28 ... Slider part,
29 ... Support position,
41 ... leg (short side leg),
42 ... fulcrum,
43 ... hooking projection,
44 ... hollow
51 ... leg (long side leg),
52 ... fulcrum,
54 ... hole,

Claims (4)

In a light-curing resin light irradiation device including a main body portion provided with a light source that irradiates light to cure the photocurable resin on the lower surface side, and a support unit that supports the main body portion,
The main body is a housing having a rectangular outer shape,
The supporting means includes four plate-like legs standing on four edges of the rectangular side of the main body so as to surround a lower space of the main body,
The light irradiation device for a photo-curable resin, wherein the plate-shaped leg portion reduces or blocks an entire wavelength region or a specific wavelength region of the irradiation light from the light source.   2. The photo-curable resin according to claim 1, wherein each of the four plate-like legs standing on the main body is foldably locked at the main body and two fulcrums. 3. Light irradiation device.   3. The photocurable resin according to claim 1, wherein each of the four plate-like legs standing on the main body is detachably locked to the main body. 4. Light irradiation device.   The light irradiation device for photocurable resin according to any one of claims 1 to 3, wherein the four plate-shaped legs are provided with connecting means for connecting adjacent legs. .

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