Holding device

Abstract

To provide a technique of compatibly achieving maintenance of airtightness of a full-face mask and securement of a user's field of vision in a holding device for holding an object in the full-face mask.SOLUTION: A holding device (10) includes a first magnetic body (11) and a second magnetic body (12) attracted to each other by magnetic force, a holding part (15) for detachably holding an object, and a suspension part (16) for suspending the holding part (15) from the second magnetic body (12).SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a holding device for holding an object within a full face mask. [Background technology]

[0002] Full-face masks, which airtightly cover the user's face (i.e., eyes, nose, and mouth), are widely used in various fields, such as nuclear facilities, chemical facilities, biological facilities, research facilities, medical facilities, and disaster prevention organizations. In these fields, full-face masks are required to ensure good visibility in addition to high airtightness when worn.

[0003] Figure 6 shows the results of a NaCl leakage rate measurement test based on the JIS. The protection factor, which indicates the airtightness inside the full-face mask, was measured for nine subjects both with and without eyeglasses (marked "■"). As is clear from Figure 6, when wearing a full-face mask while wearing eyeglasses, the temples of the eyeglasses protrude from the full-face mask, compromising its airtightness. Therefore, it is conceivable to attach templeless eyeglasses to the inside of the facepiece with magnets, as described in Patent Document 1, for example. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Registered Utility Model No. 3203761 Summary of the Invention [Problem to be solved by the invention]

[0005] The holding device described in Patent Document 1 is configured to attach the eyeglasses to the eyepieces using a magnet attached to the bridge of the frame. Therefore, if this holding device were to be used in a full-face mask, the magnet would be positioned in the center of the user's field of vision, significantly obstructing the field of vision.

[0006] Furthermore, this problem is not limited to cases where eyeglasses are held inside a full-face mask, but can also arise when attempting to hold any object inside a full-face mask, such as when a sensor that measures radiation dose is attached inside the full-face mask.

[0007] The present invention has been made to solve such problems, and its purpose is to provide a technology for a holding device that holds an object inside a full-face mask, which maintains the airtightness of the full-face mask while ensuring the user's field of vision. [Means for solving the problem]

[0008] A holding device according to one aspect of the present invention is a holding device for holding an object inside a full-face mask that covers a user's face in an airtight state, comprising: a lens mounted on the eyepiece and movable along the surface of the eyepiece; The device includes an attachment part, a holding part for detachably holding an object, and a hanging part for hanging the holding part from the attachment part. The attachment part is detachably attached to the eyepiece by a magnetic force between a first magnetic body located on the outer surface of the eyepiece and a second magnetic body located on the inner surface of the eyepiece, and the hanging part suspends the holding part from the second magnetic body. It is characterized by: [Effects of the Invention]

[0009] According to the present invention, in a holding device that holds an object inside a full-face mask, it is possible to maintain the airtightness of the full-face mask while ensuring the user's field of vision. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of a full face mask with a retaining device attached. [Figure 2] FIG. 2 is an exploded perspective view of the holding device according to the embodiment. [Figure 3] FIG. 2 is an assembled perspective view of the holding device according to the present embodiment. [Figure 4] FIG. 10 is a diagram showing a state in which a full-face mask with glasses attached by a holding device is worn. [Figure 5] FIG. 10 is a diagram showing a state in which a full-face mask with a radiation measurement sensor attached thereto is worn by a holding device. [Figure 6] FIG. 1 is a diagram showing the results of a NaCl leakage rate measurement test based on JIS. DETAILED DESCRIPTION OF THE INVENTION

[0011] The holding device 10 will be described below with reference to the drawings. Note that the embodiment of the present invention described below is an example of how the present invention is embodied, and the scope of the present invention is not limited to the scope of the described embodiment. Therefore, the present invention can be implemented by adding various modifications to the embodiment. Note that in this specification, the front-to-rear direction is defined based on the viewpoint of a user wearing the full-face mask 1, and the left-to-right direction is defined when the full-face mask 1 and the holding device 10 are viewed from the front.

[0012] Fig. 1 is a perspective view of a full face mask 1 equipped with a holding device 10. The full face mask 1 covers the user's face (more specifically, the front of the head including the eyes, nose, and mouth) in an airtight manner. As shown in Fig. 1, the full face mask 1 mainly comprises a face contact pad 2, a strap 3, eyepieces 4, an intake / exhaust unit 5, and a nose piece 6.

[0013] The facial pad 2 has a frame-shaped outer shape large enough to cover the area including the user's eyes, nose, and mouth. The facial pad 2 is made of a flexible elastic material such as urethane rubber. The strap 3 is used to secure the facial pad 2 to the user's head. The eyepiece 4 is made of a transparent, hard material (for example, resin such as polycarbonate resin, or glass). The eyepiece 4 is fitted inside the frame-shaped facial pad 2. The intake and exhaust unit 5 is attached to a notch provided at the bottom of the eyepiece 4.

[0014] The intake and exhaust unit 5 removes impurities (for example, dust and pollutants) from the outside air and takes it into the inside of the full face mask 1, and also exhausts the user's exhaled air to the outside of the full face mask 1. The nose piece 6 is connected to the intake and exhaust unit 5 inside the full face mask 1.

[0015] By fitting the face pad 2 to the user's face and tightening the strap 3, air circulation at the contact area is blocked. The eyepieces 4 are positioned facing the user's eyes at a predetermined distance in the front-to-back direction. The nosepiece 6 covers the user's nose and mouth.

[0016] The full face mask 1 suitable for mounting the holding device 10 according to this embodiment is a so-called "full face single-lens type" in which both eyes of the user are covered by a single eyepiece 4. Meanwhile, the intake / exhaust unit 5 is not limited to a system that removes impurities from outside air and takes it in, but may take in compressed air from an air tank, or take in outside air from outside the contaminated area through a hose or the like.

[0017] 1, the holding device 10 according to this embodiment holds eyeglasses 7 (object) inside the full-face mask 1. More specifically, the holding device 10 holds the eyeglasses 7 inside the full-face mask 1 so that the lenses 8L and 8R of the eyeglasses 7 are positioned facing the eyes of a user wearing the full-face mask 1.

[0018] The holding device 10 also has a function of adjusting the position of the glasses 7 along the surface of the eyepiece 4 after the user puts on the full face mask 1. Furthermore, the holding device 10 has a function of adjusting the distance between the user's eyes and the lenses 8L, 8R in the front-to-back direction when the user puts on the full face mask 1.

[0019] Fig. 2 is an exploded perspective view of the holding device 10 according to this embodiment. Fig. 3 is an assembled perspective view of the holding device 10 according to this embodiment. Fig. 4 is a view showing a state in which the full face mask 1 to which the glasses 7 are attached by the holding device 10 is worn.

[0020] 2 and 3, eyeglasses 7 suitable for being held by the holding device 10 are composed of lenses 8L and 8R and a frame 9 that holds the lenses 8L and 8R. The frame 9 is composed of rims 9L and 9R that support the lenses 8L and 8R, and a bridge 9B that connects the rims 9L and 9R.

[0021] On the other hand, the eyeglasses 7 do not have temples extending rearward from both ends of the frame 9. In other words, the eyeglasses 7 can be entirely contained within the full face mask 1 (more specifically, the space made airtight by the full face mask 1), and no part of the eyeglasses 7 protrudes outside the full face mask 1. In addition, it is desirable that the lenses 8L and 8R are treated with an anti-fogging coating.

[0022] 2 and 3, the holding device 10 mainly includes a first magnet 11 (first magnetic body), a second magnet 12 (second magnetic body), a first holder 13, a second holder 14, a clip 15 (holding portion), and a hanging link 16 (hanging portion). However, the first holder 13 and the second holder 14 can be omitted.

[0023] The first magnet 11 and the second magnet 12 are permanent magnets that attract each other by magnetic force. The first magnet 11 and the second magnet 12 are arranged opposite each other with the eyepiece 4 in between. More specifically, the first magnet 11 is located on the outer surface of the eyepiece 4, and the second magnet 12 is located on the inner surface of the eyepiece 4. Note that if one of the first and second magnetic bodies is a permanent magnet (hard magnetic body), the other may be a material (soft magnetic body) that becomes magnetic only when in proximity to the permanent magnet.

[0024] The first holder 13 has a cylindrical outer shape. The axial length of the first holder 13 is set to be greater than the diameter. The first holder 13 also has an internal space for accommodating the first magnet 11. The first holder 13 is composed of a cylindrical holder body 13a with a bottom that is open at one axial end and closed at the other, and a disk-shaped lid body 13b that closes the opening of the holder body 13a.

[0025] Holder body 13a is made of, for example, a resin material. Lid 13b is made of, for example, a resin material or nonwoven fabric. Then, with first magnet 11 housed inside holder body 13a, the opening of holder body 13a is closed by lid 13b, thereby preventing first magnet 11 from coming into contact with the outside air (polluted atmosphere). Furthermore, by covering first magnet 11 with first holder 13, first magnet 11 can be protected from impacts due to dropping or collision.

[0026] The second holder 14 has an internal space for accommodating the second magnet 12. The second holder 14 is composed of a holder main body 14a that is open at one axial end and closed at the other end, and a lid 14b that closes the opening of the holder main body 14a. The holder main body 14a is made of, for example, a resin material. The lid 14b is made of, for example, a resin material or nonwoven fabric. With the second magnet 12 accommodated inside the holder main body 14a, the opening of the holder main body 14a is closed by the lid 14b.

[0027] The clip 15 removably holds the eyeglasses 7. In this embodiment, the bridge 9B of the eyeglasses 7 is clamped (held) by the clip 15. However, a specific example of the holding part is not limited to the clip 15, and may be a hook that engages (holds) the eyeglasses 7.

[0028] The suspending link 16 suspends the clip 15 from the second holder 14 (second magnet 12). More specifically, the suspending link 16 has an upper end connected to the lower surface of the second holder 14 and a lower end connected to the upper end of the clip 15.

[0029] The suspension link 16 is configured to change the posture (front / back and left / right position and rotation) of the clip 15 relative to the second holder 14. The suspension link 16 is configured, for example, by a ball attached to one end of a rod and a bracket that rotatably holds the ball. The bracket is connected to the underside of the second holder 14, and the other end of the rod is connected to the upper end of the clip 15.

[0030] As a first posture change, when the ball rotates around an axis perpendicular to both the front-to-rear direction and the extension direction of the suspending link 16, the clip 15 moves in the front-to-rear direction (i.e., the distance between the user's eyes and the lenses 8L, 8R is adjusted). As a second posture change, when the ball rotates around an axis extending in the front-to-rear direction, the clip 15 moves in the left-to-right direction. Furthermore, as a third posture change, when the ball rotates around an axis extending in the extension direction of the suspending link 16, the clip 15 rotates in place.

[0031] However, the specific configuration of the suspending part is not limited to the above example, and for example, a universal joint or the like may be adopted. Furthermore, the suspending part is not limited to one that realizes all of the first to third position changes, but it is sufficient if it can realize at least the first position change. In other words, the suspending part is sufficient if it is configured to at least change the position of clip 15 in the front-to-rear direction relative to second holder 14 (second magnet 12).

[0032] The following describes how to use the holding device 10. First, the bridge 9B of the eyeglasses 7 is clamped by the clip 15. Next, the cover 13b of the first holder 13 is brought into contact with the outer surface of the eyepiece 4, and the cover 14b of the second holder 14 is brought into contact with the inner surface of the eyepiece 4, so that the first holder 13 and the second holder 14 face each other with the eyepiece 4 in between. This causes the first holder 13 and the second holder 14 to be joined together by the magnetic forces of the first magnet 11 and the second magnet 12. As a result, the eyeglasses 7 are held inside the full-face mask 1.

[0033] Next, the full face mask 1 is temporarily attached to the face, and the first holder 13 is moved along the outer surface of the eyepiece 4. This causes the second holder 14 to follow the first holder 13 and move along the inner surface of the eyepiece 4. As a result, the user's eyes can be brought face to face with the lenses 8L and 8R, as shown in FIG. 4(A).

[0034] Next, the full face mask 1 is removed from the face, and the hanging link 16 is operated to move the glasses 7 inside the full face mask 1. This allows the glasses 7 to be positioned appropriately inside the full face mask 1 (mainly by adjusting the distance between the user's eyes and the lenses 8L, 8R in the front-to-back direction), as shown in FIG.

[0035] Next, the full-face mask 1 is worn on the face, and a predetermined task (for example, a task in a radiation environment) is performed. Furthermore, if the position of the glasses 7 shifts during the task, the shift can be corrected by moving the first holder 13 along the outer surface of the eyepiece 4 without removing the full-face mask 1.

[0036] According to the above embodiment, the templeless eyeglasses 7 can be held inside the full face mask 1, thereby maintaining the airtightness of the full face mask 1 and preventing the eyeglasses 7 from being exposed to a contaminated atmosphere. Also, by suspending the clip 15 from the second holder 14 with the suspending link 16, the first holder 13 and the second holder 14 can be positioned at a position offset from the center of the user's field of vision. As a result, the user's field of vision can be ensured.

[0037] Furthermore, according to the above embodiment, the holding device 10 is attached to the inner surface of the eyepiece 4 using the first magnet 11 and the second magnet 12, so the position of the glasses 7 can be finely adjusted even after the full face mask 1 is worn. That is, according to the above embodiment, the object can be moved to any position without removing the full face mask 1. However, the specific configuration of the attachment part is not limited to the combination of the first magnet 11 and the second magnet 12. As another example, the attachment part may be a suction cup that adheres to the inner surface of the eyepiece 4.

[0038] In ophthalmology, the standard corneal vertex distance when writing eyeglass prescriptions is 12mm. Although you can still see even if it is not exactly 12mm, if it is greater than 12mm (the distance between the eyes and lenses 8L and 8R), objects will appear smaller. Also, if lenses 8L and 8R are farther away from the eyes, the range of correction becomes narrower (the peripheral area of ​​lenses 8L and 8R is the same as the naked eye), making it difficult to correct vision.

[0039] Therefore, according to the above embodiment, by employing the suspension link 16 that can realize at least the first position change, it is possible to adjust the distance in the front-to-back direction between the user's eyes and the lenses 8L, 8R. This allows the lenses to be placed in the optimal position for the corneal vertex distance, which varies from user to user. Furthermore, by realizing the second and third position changes with the suspension link 16, more flexible position adjustment is possible.

[0040] Furthermore, according to the above embodiment, by storing the first magnet 11 inside the first holder 13, it is possible to prevent the first magnet 11 from being exposed to a contaminated atmosphere. Furthermore, by increasing the axial length of the first holder 13, it becomes easier to grip the first holder 13. As a result, it becomes easier to fine-tune the position by moving the first holder 13 along the outer surface of the eyepiece 4.

[0041] Furthermore, according to the above embodiment, by making cover 14b out of nonwoven fabric, it is possible to prevent the inner surface of eyepiece 4 from being damaged when second holder 14 moves along the inner surface of eyepiece 4. Similarly, by making cover 13b out of nonwoven fabric, it is possible to prevent the outer surface of eyepiece 4 from being damaged.

[0042] However, the first magnet 11 is not limited to being housed in the first holder 13, but may be coated with a resin film. Also, the second magnet 12 is not limited to being housed in the second holder 14, but may have a nonwoven fabric attached to the surface of the second magnet 12 and the suspension link 16 attached directly to the second magnet 12.

[0043] Furthermore, in the holding device 10 according to the above embodiment, the magnetic force of the first magnet 11 and the second magnet 12 can be changed as desired to suit the product to be attached (for example, the thickness of the eyepiece 4 or the weight of the object). The size and holding force of the clip 15 can also be changed to suit the size and shape of the object. Furthermore, the length of the suspension link 16 can also be adjusted by adding parts for joints at the joint portions.

[0044] Furthermore, the holding device 10 according to the above embodiment can fix an object not only inside the full face mask 1 but also outside by switching the positions of the first magnet 11 and the second magnet 12. With the present invention, an object that is too large to fit inside the full face mask 1, such as a radiation protection face shield, can also be easily fixed to the outside of the full face mask 1.

[0045] Furthermore, the holding device 10 according to the above embodiment does not use magnetic means directly on the object (the object to be attached) itself, but rather holds a wide variety of products using a clip 15 suspended from the second magnet 12 by a hanging link 16. Therefore, there is no need to attach a magnet or metal to the object itself, and any object that can be held can be fixed. Furthermore, in the holding device 10 according to the above embodiment, the first magnet 11 and second magnet 12 are positioned at the forehead, so they do not obstruct the field of vision.

[0046] Also, according to the above embodiment, the surfaces of the first magnet 11 and the second magnet 12 that come into contact with the eyepiece 4 are covered with silicon or the like. This prevents damage to the eyepiece 4 caused by the first magnet 11 and the second magnet 12. Also, by covering the surfaces of the first magnet 11 and the second magnet 12 with silicon or the like, it becomes possible to move the object to any position. Furthermore, because the first magnet 11 and the second magnet 12 are entirely covered, damage to the first magnet 11 and the second magnet 12 when dropped is prevented, and the coating material of the first magnet 11 and the second magnet 12 is prevented from peeling or oxidizing.

[0047] Furthermore, the eyeglasses holder of Patent Document 1 holds the vision correction lenses inside the goggles without making any modifications to the goggles themselves, but when used with protective gear that has a structure in which the light-transmitting part is separated from the face, such as a dust mask that can cover the entire face, the corneal vertex distance becomes large, not only failing to provide sufficient correction, but also significantly reducing work safety. In other words, even if the eyeglasses holder of Patent Document 1 were applied to a full-face mask 1, it would not be possible to obtain the same effects as the present invention.

[0048] Furthermore, the drawings in Patent Document 1 show goggles, and although there are many different types of goggles, it is believed that the distance between the goggles and the eyes does not vary greatly. On the other hand, many types of full-face masks 1 are available on the market from various manufacturers, and the distance between the eyepieces 4 and the eyes varies depending on the product. In other words, the mechanism in the above embodiment that holds the glasses 7 at an appropriate position in the space between the eyepieces 4 and the eyes is very effective.

[0049] Furthermore, in the above embodiment, the glasses 7 are treated with anti-fogging coating to prevent the glasses 7 from fogging due to an increase in humidity inside the full face mask 1 during work. However, even if the glasses 7 are not treated with anti-fogging coating, it is possible to prevent the glasses 7 from fogging by holding a dehumidifying agent in a separate holding device 10 that is not for the glasses 7 and fixing it inside the full face mask 1.

[0050] 5 is a diagram showing a state in which the full face mask 1 to which the radiation measuring sensor 20 is attached by the holding device 10 is worn. As shown in Fig. 5, the radiation measuring sensor 20 that measures the radiation dose may be clamped by a clip 15. This makes it possible to measure the radiation dose inside the full face mask 1 (for example, in the lens of the eye) while maintaining the airtightness of the full face mask 1.

[0051] 5, the holding device 10 and the radiation measuring sensor 20 can be positioned in the corner of the user's field of vision by shifting the first holder 13 and the second holder 14 to the corner of the eyepiece 4. This allows the radiation dose inside the full face mask 1 to be measured while ensuring the user's field of vision.

[0052] Furthermore, by operating the suspending link 16 to move the radiation measuring sensor 20 backward (i.e., the first attitude change), the radiation measuring sensor 20 can be placed near the user's eye, thereby making it possible to properly measure the radiation dose in the crystalline lens of the eye.

[0053] Although the embodiments of the present invention have been described above, the conditions in the examples are merely examples adopted to confirm the feasibility and effects of the present invention, and the present invention is not limited to these examples. Various conditions may be adopted in the present invention as long as they do not deviate from the gist of the present invention and the object of the present invention is achieved. [Explanation of symbols]

[0054] 1...full face mask, 2...face contact pad, 3...strap, 4...eyepiece, 5...intake and exhaust unit, 6...nose piece, 7...glasses, 8L, 8R...lenses, 9...frame, 9B...bridge, 9L, 9R...rims, 10...holding device, 11...first magnet, 12...second magnet, 13...first holder, 13a, 14a...holder body, 13b, 14b...lid body, 14...second holder, 15...clip, 16...hanging link, 20...radiation measurement sensor

Claims

1. A holding device for holding an object inside a full-face mask that covers a user's face in an airtight manner, a mounting portion that is movable along a surface of the eyepiece when attached to the eyepiece; a holding unit that detachably holds an object; a suspension part that suspends the holding part from the attachment part, the attachment portion is detachably attached to the eyepiece by a magnetic force between a first magnetic body located on the outer surface of the eyepiece and a second magnetic body located on the inner surface of the eyepiece, the first magnetic body attracting the second magnetic body by a magnetic force; The holding device is characterized in that the suspending part suspends the holding part from the second magnetic body.

2. 2. The holding device according to claim 1, The holding device is characterized in that the suspension part is configured to be able to change the front-to-rear position of the holding part relative to the second magnetic body.

3. 3. The holding device according to claim 1 or 2, A holding device characterized in that the first magnetic body is made of a resin material and is housed in a cylindrical holder whose axial length is greater than its diameter.

4. The holding device according to any one of claims 1 to 3, A holding device characterized in that a nonwoven fabric is attached to a surface of the second magnetic body that faces the first magnetic body.

Images