TWI557464B - The spectacles of gas mask - Google Patents

Description

Gas mask with glasses

The present invention relates to a gas mask, and more particularly to the installation of eyeglasses inside the see-through window of a gas mask, thereby ensuring a correct view of a low vision person when wearing a gas mask with a low vision.

Generally speaking, the gas mask is worn on the wearer's face to protect the human body from toxic gases in the contaminated area. This gas mask provides purified air to the wearer's respirator through a purification cartridge that is coupled to the mask. Therefore, the wearer can safely carry out activities in contaminated areas.

Such a gas-repellent surface has a face portion that seals the face, a see-through window that is disposed on the upper portion of the face, a purifying cartridge that is disposed on the side of the face, and an exhaust unit that is disposed at a central portion below the face.

The gas mask can be viewed through the see-through window to confirm the time of the watch display, but for the low vision person, it is impossible to correctly confirm the time using only the see-through window, so it is disclosed that the inside of the see-through window of the gas mask is suitable for the low vision person. The structure of the independent gas mask with glasses.

In addition, the gas mask for gas masks cannot be correctly aligned with the focus of the glasses because the wearer's facial structure and face size are different and the positions of the eyes are different. In this case, it is impossible to ensure that the low vision person can see. time.

According to this, the position adjustment structure is used at the nearest position, and the position of the gas mask for the gas mask can be appropriately adjusted, so that the person with low vision can easily confirm the time.

However, the position adjustment structure of the conventional gas mask for eyeglasses is very complicated, whereby it is difficult to adjust the position of the glasses, and there is a drawback that it is difficult to fix the position of the glasses after adjusting the position of the glasses.

Moreover, the conventional gas mask for gas mask has a complicated position adjustment structure for adjusting the position, and therefore, not only many components are used, but also assembly complexity and manufacturing cost are present. Very high disadvantage.

The present invention has been made to overcome the disadvantages of the prior art as described above, and an object thereof is to provide a gas mask for a gas mask which uses a very simple position adjustment structure, and which can adjust the position of the gas mask for gas mask very easily. The position of the adjusted glasses can be fixed very stably and firmly.

In order to achieve the above object, a gas mask mounting device for a gas mask according to the present invention comprises: a spectacle frame provided with a pair of lenses; a guide rail disposed in a see-through window of the gas mask in a downward direction; and a guide block coupled to the spectacle frame Moving up and down together with the eyeglass frame, and moving up and down along the guide rail to adjust the upper and lower positions thereof; a locking member disposed on the eyeglass frame and pressing the guide rail and the guide block to fix the guide block a side position of the guide rail; a guide passage formed in the hole shape in the guide block and the eyeglass frame, and inserted into the guide rail; and a pocket formed in the guide block in a state of being communicated with the guide passage And between the eyeglass frames, and the locking member that can move up and down.

The locking member is constituted by an inclined surface which is formed in an inclined state on a side facing one side of the pocket, and a locking body formed on the other side of the inclined surface And a pressing surface facing the guide rail is disposed.

The pocket further includes a tilting pad formed on a side facing the inclined surface of the locking member, and having an inclination corresponding to the inclined surface, and the inclined surface is in a state of being in close contact slide.

The locking member is configured such that the inclined surface presses the guide rail and the guide block through the pressing surface while sliding inside the pocket in a state of being in close contact with the inclined pad, thereby One side of the guide rail is fixed or unfixed.

The locking member further includes a clamping portion that protrudes toward the outer side of the eyeglass frame or the guide block to be clamped.

The locking member is moved inside the pocket in accordance with the operation of the grip portion.

The locking component further includes: a pair of elastic ribs received in the pocket a portion that is formed to be flared toward both sides according to an end portion of the locking body in which the inclined surface is disposed, and can be elastically deformed to form a closed state; and a protrusion is formed, and the protrusion is formed in the elasticity The end of the rib.

The pocket further includes a block that catches and fixes the latching projection on a side facing the catching projection.

The spectacle frame further includes: a plurality of bonding protrusions formed on a side facing the guide block, and configured by a plurality of and forming a spacer state; and an embedding portion, the protrusion is formed on the bonding protrusion Start.

The guide block further includes: an insert holder having a hole shape and fitting the insert portion; and a side wall having a length formed to correspond to a protruding length of the joint protrusion, and the insert holder and the seat The surface of the spectacle frame is isolated.

The present invention also includes a first latching tooth forming a zigzag shape along a length of the guide rail on a side of the guide rail facing the guide block, and a second latching tooth in the first card One side of the guide block facing the teeth forms a zigzag shape, and the guide block is restrained in a state in which the guide block is caught in the guide block while being engaged with the first latch.

A nip protrusion is disposed on the side wall, and a coupling groove that engages the nip protrusion is disposed on the coupling protrusion.

The width of the fitting portion is smaller than the width of the coupling protrusion, and further a step portion is formed at a portion where the fitting portion meets the coupling protrusion, and the step portion is contacted by the insertion portion of the guide block.

An uneven portion is disposed in the nip portion.

The eyeglass frame has a pair of openings provided with a pair of lenses, and a support block capable of supporting the eyeglasses is formed in each of the openings.

According to the present invention, the use of a guide block that moves up and down along the guide rail is coupled to the simple position adjustment structure of the eyeglass frame, so that not only the number of components is required to be small, but also the assembly procedure can be simplified to greatly reduce the manufacturing cost, and It has the advantage that the up and down position adjustment of the eyeglass frame can be performed very easily while saving the manufacturing cost.

In particular, the guide block is firmly fixed to one side of the guide rail in such a manner that the guide rail presses the guide rail and the guide block, so that the spectacle frame combined with the guide block can be very strong and stable. The advantage of maintaining the position in its adjusted position.

According to the present invention, the guide passage between the eyeglass frame and the guide block can be formed very easily by the very simple joint structure of the joint of the guide block and the joint protrusion of the eyeglass frame, so that the guide rail guide can be very stable and correct. The vertical movement is performed, and the first and second engaging teeth of the guide rail and the guide block are formed at positions facing each other, whereby there is an advantage that position adjustment of the vertical movement of the guide block can be stably and accurately performed.

According to the present invention, the insertion fixture is fitted to the guide block according to the fitting portion of the coupling protrusion, whereby the guide block can be easily coupled to the coupling protrusion of the eyeglass frame while being coupled to the guide block at the insertion portion of the coupling protrusion. When the fixing device is embedded, the engaging protrusion of the guiding block engages with the coupling groove of the coupling protrusion, whereby the guiding block can be strongly coupled to the coupling protrusion of the eyeglass frame, thereby ensuring the connection between the guiding block and the eyeglass frame. A more stable guiding path.

According to the present invention, when the embedding groove of the guide block is coupled to the embedding portion of the coupling protrusion, the embedding groove of the guide block is in contact with the step portion of the coupling protrusion, whereby the fixed guide block and the eyeglass frame can be maintained. The guiding path has the advantage of being able to ensure a more stable guiding path.

According to the present invention, the lock member is moved up and down by the inclined surface and the inclined pad, whereby the lock member can perform stable forward and backward travel, and the fixing guide can be fixed and released by the lock member, particularly the lock member, which can be easily and quickly performed. The inclined surface slides along the inclined pad of the pocket, whereby the locking member presses the guide rail and the guide block, thereby having the advantage that the guide block can be stably fixed to one side of the guide rail.

According to the present invention, when the locking member is moved upward, the projection of the elastic rib is caught in the card slot of the pocket, whereby there is an advantage that the rail and the guide block can be fixed by the locking member very stably.

The present invention has the advantage that the projections and the blocks according to the curved structure have an elastic locking action capable of more smoothly generating elastic ribs.

According to the present invention, since the nip portion disposed on the rear side of the lock member protrudes toward the rear of the eyeglass frame, there is an advantage that the guide block can be more easily fixed and released.

The present invention has an advantage of being able to effectively prevent the lens embedded in each opening of the eyeglass frame from being detached to the outside by the support block disposed in the opening of the eyeglass frame.

1‧‧‧ gas mask

10‧‧‧ glasses frame

10a‧‧‧Support block

11‧‧‧ lenses

13‧‧‧ Combination slot

14‧‧‧ embedded department

15‧‧‧Binding bulges

16‧‧‧Steps

17‧‧‧ tilting pad

18‧‧‧ pocket

19‧‧‧ card slot

19a‧‧‧ block

2‧‧‧Face

2a, 2b‧‧‧ embedded slot

20‧‧‧rails

21‧‧‧First card tooth

23‧‧‧Bottom bending

25‧‧‧Guided access

3‧‧‧ Perspective window

30‧‧‧ Guide block

31‧‧‧second card teeth

33‧‧‧ side wall

34‧‧‧Insert holder

36‧‧‧Bite bulge

4‧‧‧purification cartridge

40‧‧‧Locking parts

42‧‧‧Sloping surface

43‧‧‧ Pressurized surface

45‧‧‧Flexible ribs

46‧‧‧ stuck bulge

48‧‧‧Clamping Department

48a‧‧‧

5‧‧‧Exhaust unit

W1, w2‧‧‧ width

1 is a front view showing a state in which a gas mask for gas mask according to the present invention is applied to a gas mask; FIG. 2 is a perspective view showing a lens for a gas mask according to an embodiment of the present invention; and FIG. 3 is a view showing An exploded perspective view of a gas mask for a gas mask according to an embodiment of the present invention; FIG. 4 is an exploded perspective view of a gas mask for a gas mask according to an embodiment of the present invention; FIG. 5 is a perspective view showing a gas mask for a gas mask according to an embodiment of the present invention; Front view of gas mask for gas mask; Fig. 6 is a cross-sectional view taken along line AA of Fig. 5; Fig. 7 is a plan view showing an enlarged portion of arrow B of Fig. 6; Fig. 8 is a view showing 7 is a view showing a state in which the lock member moves upward on the guide block side pressurizing rail; FIG. 9 is a cross-sectional view taken along line CC of FIG. 5; and FIG. 10 is a view taken along line DD of FIG. Cross-sectional view; and Fig. 11 is a rear view showing the rear of the eyeglass frame according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 to 11 are views showing a lens for a gas mask according to an embodiment of the present invention.

As shown in FIGS. 1 to 11, the gas mask mounting device for a gas mask according to the present invention comprises: a spectacle frame 10 provided with a pair of lenses 11; and a guide rail 20 disposed on the inner side of the see-through window 3 of the gas mask 1 in a downward direction; A guide block 30 that is coupled to the eyeglass frame 10 and moves the guide rail 20 up and down; a locking member 40 that is disposed on the eyeglass frame 10 and that fixes the guide block 30 at one side of the guide rail 20.

As shown in Fig. 1, the gas mask 1 has a face 2 that seals the wearer's face, a see-through window 3 that is disposed on the upper portion of the face 2, a purifying cartridge 4 that is disposed on the side of the face 2, and a lower portion that is disposed below the face 2. The exhaust unit 5 in the center and the like.

The eyeglass frame 10 is disposed inside the see-through window 3 of the gas mask 1 as shown in FIG. 1 to adjust the upper and lower positions thereof, and the eyeglass frame 10 has a pair of openings, and a pair of openings are provided in a manner to fit a low vision person. For the lens 11.

In addition, as shown in FIGS. 2 to 5, the respective opening shapes of the eyeglass frame 10 are provided. The support block 10a capable of stably supporting the lens 11, in particular, the support block 10a is formed at a position of the opening side edge of the eyeglass frame 10 toward the opening section so as to be able to support a part of the lens 11 provided at the opening of the eyeglass frame 10. Similarly, the lens 11 embedded in each opening of the eyeglass frame 10 can be supported not only by the support block 10a but also effectively, and the lens 11 can be prevented from being detached to the outside.

Further, the support block 10a is disposed on the front side of the opening of the eyeglass frame 10 as shown in FIGS. 2 to 5, and can be prevented from being detached to the front side in a state where the lens 11 is coupled to the rear of the eyeglass frame 10.

As shown in FIG. 3, the front center portion of the eyeglass frame 10 has a pair of coupling projections 15 projecting forward, and the pair of coupling projections 15 are spaced apart in the width direction of the eyeglass frame 10.

The guide rail 20 is composed of a plate member elongated in the longitudinal direction, and is disposed inside the see-through window 3 of the gas mask 1 in the upper and lower directions, and the upper end and the lower end of the guide rail 20 are coupled to the inside of the see-through window 3 of the gas mask 1. As shown in Fig. 1, the upper side frame and the lower side frame of the gas mask 1 incorporating the see-through window 3 are respectively provided with insertion grooves 2a and 2b. Similarly to the gas mask 1, the insertion grooves 2a and 2b are made of a rubber material and integrally molded to the gas mask 1. The rubber grooves have characteristics such that the fitting grooves 2a and 2b are configured to elastically accommodate the upper end and the lower end of the guide rail 20.

Further, the lower end bent portion 23 is formed at the lower end of the guide rail 20, and the lower end portion of the guide rail 20 can be more easily fitted to the lower side fitting groove 2b by the lower end bent portion 23. The lower end bent portion 23 is convexly curved forward in the see-through window 3 of the gas mask 1, thereby preventing the internal space of the gas mask 1 from being reduced. If the lower end of the guide rail 20 forms a straight line, the lower end of the guide rail 20 protrudes inside the gas mask 1, thereby reducing the internal space of the gas mask 1. According to this, the lower end bent portion 23 provided at the lower end of the guide rail 20 of the present invention is bent to protrude forward, whereby the internal space of the gas mask 1 is not reduced, and the wearer's face and the lower end of the guide rail 20 are not Contact, therefore, has the advantage of being able to improve the wearing comfort.

The guide rail 20 is formed with a zigzag-shaped first latch 21 in the longitudinal direction on the side (front side) facing the guide block 30, and the first latch 21 is continuously formed vertically at a fixed pitch. The rear side of the guide rail 20 is formed into a flat surface so as to be pressurized by the pressing surface 41 of the lock member 40 to be described later.

The guide block 30 is coupled to the coupling protrusion 15, and accordingly, as shown in FIG. 10, a guide passage 25 is formed between the guide block 30 and the eyeglass frame 10 and inserted through the guide rail 20, and both sides of the guide passage 25 are coupled by a pair of projections. The 15 is closed, and is formed in the "mouth" corresponding to the square cross section of the guide rail 20. The shape of the hole in the section. The guide passage 25 of the "mouth" type cross section is exposed by the pair of coupling projections 15, the guide block 30, and the front surface of the spectacle frame 10, and the guide rail 20 is stably disposed in the guide passage 25, whereby the guide rail 20 is aligned. The guide block 30 and the eyeglass frame 10 can guide the up and down movement very stably.

Further, the guide block 30 is formed in a zigzag shape on a side (rear side) facing the first latch 21 of the guide rail 20, and forms a second latch 31 that is engaged with the first latch 21. The second latching teeth 31 are formed continuously up and down at a fixed pitch corresponding to the first latching teeth 21. According to this, when the guide block 30 moves up and down along the guide rail 20, the second latch 31 of the guide block 30 is caught by the first latch 21 of the guide rail 20 while being restrained, and accordingly moves up and down. The position can be adjusted very precisely and stably.

As described above, by the very simple configuration in which the guide block 30 is coupled to the coupling protrusion 15 of the eyeglass frame 10, the guide passage 25 through which the guide rail 20 passes can be formed very simply between the eyeglass frame 10 and the guide block 30, thus guiding The block 30 is able to move up and down very stably and accurately with respect to the guide rail 20.

Further, the guide block 30 is formed as shown in FIGS. 3 and 4, and has a "匚"-type cross-sectional structure having a pair of side walls 33 on both sides thereof, and an in-line holder 34 is formed adjacent to each side wall 33 of the guide block 30. . Such a side wall 33 is formed to have a length corresponding to the protruding length of the above-described coupling protrusion 15, and thus, in the case where the guide block 30 is coupled to the later-described insertion portion 14 formed in the coupling protrusion 15, the insertion of the holder 34 is generated. The role of the spacer isolated on the surface of the eyeglass frame 10.

In addition, the tip end of the coupling protrusion 15 of the eyeglass frame 10 has an insertion portion 14 that is fitted to the guide block 30 and fitted into the holder 34. Thus, the fitting portion 14 of the coupling projection 15 is fitted to the fitting fixture 34 of the guide block 30, whereby the guide block 30 can be coupled to the coupling projection 15 of the eyeglass frame 10 very simply.

As shown in Fig. 9, the width w1 of the fitting portion 14 is formed smaller than the width w2 of the coupling projection 15, whereby the step portion 16 is formed at a portion where the fitting portion 14 meets the coupling projection 15. Such a step portion 16 is formed in a flat surface in the up-and-down direction, whereby the guide block 30 is in contact with the step portion 16 after being fitted into the fixture 34, and the joint position of the guide block 30 can be easily determined. Similarly, when the insert holder 34 of the guide block 30 is coupled to the fitting portion 14 of the coupling protrusion 15, the insert holder 34 of the guide block 30 is in contact with the step portion 16 of the coupling protrusion 15 in the rear, thereby being able to maintain The guide passage 25 between the fixed guide block 30 and the eyeglass frame 10 has the advantage of ensuring a more stable guide passage 25.

Further, in each side wall 33 of the guide block 30, the engaging projection 36 protrudes in a hook shape toward the outer side surface of the coupling projection 15, and a coupling groove 13 that engages with the engaging projection 36 is formed on the outer side surface of the coupling projection 15. . Accordingly, when the fitting portion 14 of the coupling protrusion 15 is coupled to the insertion fixture 34 of the guide block 30, the engaging projection 36 of the guide block 30 is engaged with the coupling groove 13 of the coupling protrusion 15, whereby the guide block 30 can The coupling protrusion 15 of the eyeglass frame 10 is more firmly bonded, thereby having the advantage of ensuring a more stable guide passage 25 between the guide block 30 and the eyeglass frame 10.

The lock member 40 is provided to be movable up and down and penetrates the center portion of the eyeglass frame 10, and the lock member 40 presses the guide rail 10 on the side of the guide block 10 by moving the eyeglass frame 10 up and down, and is configured to connect the guide block 30 and the guide block. The eyeglass frame 10 of 30 is firmly fixed to one side of the guide rail 20.

A pocket 18 is formed in the central portion of the eyeglass frame 10, particularly between the pair of coupling projections 15, and the locking member 40 is provided in the pocket 18 so as to be movable up and down. As shown in FIG. 6, the pocket 18 is a space which is formed between the guide block 30 and the eyeglass frame 10 in a state of being communicated with the guide passage 25 and is movably mounted in the lock member 40.

The locking member 40 is composed of an inclined surface 42 formed on one side (upper portion) of the locking member 40 and facing one side of the pocket 18, and a locking body formed on the other side (front side) of the inclined surface 42 And an engraved shape of the pressing surface 43 facing the guide rail 20 is disposed. The pocket 18 forms a tilting pad 17 whose inclined pad 17 has an inclination corresponding to the inclined surface 42 while being in close contact with the inclined surface 42 on one side (upper portion) corresponding to the inclined surface 42 of the locking member 40. As shown in FIGS. 7 and 8, when the locking member 40 is moved up and down along the pocket 18, the inclined surface 42 of the locking member 40 slides along the inclined pad 17 in a state of being in close contact with the inclined pad 17 of the pocket 18, thereby locking The member 40 is moved up and down to be moved back and forth, and the guide block 30 can be fixed and unlocked very easily. At this time, in the case where the locking member 40 is moved upward as shown in Fig. 8, the inclined pad 17 presses the inclined surface 42 of the locking member 40, and the guide block 30 is fixed to the guide rail 20 by the pressing surface 43 of the locking member 40. In the one-side position, when the lock member 40 is moved in the opposite direction as shown in Fig. 7, the pressurization is released to release the fixed lock member 40.

Specifically, when the lock member 40 is positioned on the lower side in the pocket 18 as shown in Fig. 7, the first latch 21 of the guide rail 20 and the second latch 31 of the guide block 30 are separated from each other. In this manner, in a state where the first latch 21 of the guide rail 20 and the second latch 31 of the guide block 30 are separated from each other, the guide block 30 and the eyeglass frame 10 can be easily moved up and down along the guide rail 20. By moving, the upper and lower positions of the guide block 30 and the eyeglass frame 10 can be adjusted very easily.

Also. After adjusting the upper and lower positions of the guide block 30 and the eyeglass frame 10, as shown in Fig. 8, if the locking member 40 is moved upward in the pocket 18, the locking member 40 projects forward, and the pressing surface 43 of the locking member 40 The guide block 30 side presses the guide rail 20, thereby firmly holding the state in which the first latching teeth 21 of the guide rail 20 are engaged with the second latching teeth 31 of the guide block 30. According to this, the guide block 30 can be fixed to one side position of the guide rail 20 very strongly.

Further, the locking member 40 is formed to be open to the left and right sides in the upper portion thereof, and has a pair of elastic ribs 45 fitted in the pocket 18, and the engaging projections 46 are formed at the upper ends of the respective elastic ribs 45. At this time, the elastic rib 45 is opened to both sides at the end portion of the inclined surface 42 where the lock member 40 is disposed as shown.

In addition, the pocket 18 is formed with a card slot 19 on an inner side surface facing the latching projection 46. According to the upward movement of the locking member 40, the elastic rib 45 of the locking member 40 is elastically closed after being folded in the pocket 18, according to which The catching projections 46 of the elastic ribs 45 are caught by the card slots 19 for bonding.

As described above, when the locking member 40 is moved upward, the catching projection 46 of the elastic rib 45 is caught by the engaging groove 19 of the pocket 18, whereby the rail 20 and the guide block 30 can be held by the locking member 40 with a very stable hold. .

The catching projection 46 is constituted by a curved configuration, and the slider 19a formed by bending at the lower portion of the card slot 19 is disposed on the side of the pocket 18 facing the latching projection 46, according to the projection of the curved structure and The block has a function of more smoothly engaging the elastic ribs. That is, the locking member 40 is caught by the block 19a and the locking member 40 is fixed while the catching projection 46 is inserted into the card slot 19.

Also, the grip portion 48 of the locking member 40 protrudes in the rear face. That is, the grip portion 48 of the lock member 40 protrudes toward the outer side of the eyeglass frame 10 or the guide block 30. The grip portion 48 protrudes rearward from the pocket 18 of the spectacle frame 10, and the grip portion 48 is held by a finger or the like, whereby the up and down movement of the lock member 40 can be easily performed, thereby having the guide block 30 The advantage of fixing and unscrewing the work becomes easier. That is, the lock member 40 is easily moved inside the pocket 18 in accordance with the operation of the grip portion 48.

Further, the uneven portion 48a is disposed in the nip portion 48, and the operation of the lock member 40 can be performed more smoothly.

According to the present invention as described above, the guide block 30 that is moved up and down along the guide rail 20 is coupled to the simple position adjustment structure of the eyeglass frame 10, and the vertical position adjustment of the eyeglass frame 10 can be performed very easily, and the manufacturing thereof can be saved. Cost, especially by pressing the guide rail 20 and the guide block 30 by the locking member 40, the guide block is firmly fixed to one side of the guide rail, and the eyeglass frame coupled to the guide block has a very strong and stable retention. The advantage of the position being adjusted.

The specific examples of the present invention have been described above, but the present invention is not limited by the embodiments and the accompanying drawings, and various changes can be made by those skilled in the art without departing from the scope of the invention.

10‧‧‧ glasses frame

13‧‧‧ Combination slot

14‧‧‧ embedded department

15‧‧‧Binding bulges

16‧‧‧Steps

30‧‧‧ Guide block

34‧‧‧Insert holder

W1, w2‧‧‧ width

Claims (5)

A gas mask for gas mask, comprising: a spectacle frame (10), configured with a pair of lenses (11); a guide rail (20) disposed in a see-through window (3) of the gas mask (1) in a downward direction; a guide block (30) Binding to the eyeglass frame (10) and moving up and down together with the eyeglass frame (10), and moving up and down along the guide rail (20) to adjust its up and down position; a locking member (40) disposed in the The eyeglass frame (10) presses the guide rail (20) and the guide block (30) to fix the guide block (30) to one side of the guide rail (20); and guides the passage (25) to a hole shape is formed between the guide block (30) and the eyeglass frame (10), and is inserted into the guide rail (20); and a pocket (18) is formed in a state of being in communication with the guiding passage (25) Between the guide block (30) and the eyeglass frame (10), the locking member (40) that can move up and down is built in. The gas mask for a gas mask according to claim 1, wherein the locking member (40) is composed of an inclined surface (42) and a locking body, wherein the inclined surface (42) is formed in an inclined state. On a side facing one side of the pocket (18), the locking body is formed on the other side of the inclined surface (42) and is provided with a pressing surface facing the guide rail (20) ( 43); and the pocket (18), further comprising: a tilting pad (17) formed on a side facing the inclined surface (42) of the locking member (40) and having the inclined surface ( 42) a corresponding inclination, and the inclined surface (42) slides in a snug state; wherein the locking member (40) is such that the inclined surface (42) is inside the pocket (18) Pressing the guide rail (20) and the guide block (30) through the pressing surface (43) while sliding against the state of the tilting pad (17), and further on the guide rail (20) The guide block (30) is fixed or unfixed at one side, and the locking component (40) further includes: a clamping portion (48) protruding toward the outer side of the spectacle frame (10) or the guide block (30), the locking member (40) being according to the clamping portion (48) The operation moves inside the pocket (18). The lens for gas mask according to claim 2, wherein the locking member (40) further includes: a pair of elastic ribs (45) housed inside the pocket (18) and configured The end portion of the locking body of the inclined surface (42) is formed to be flared to both sides, and is thereby elastically deformable to form a closed state; and the protrusion (46) is caught, and the protrusion is formed on the elastic rib An end portion of (45); the pocket (18) further comprising: a latching piece (19a) that catches and fixes the latching projection on a side facing the latching projection (46) (46) ). The spectacles for a gas mask according to claim 1, wherein the spectacles frame (10) further includes: a plurality of bonding protrusions (15) formed to face the guide block (30) One side, and is composed of a plurality of and constitutes a spacer state; and an embedding portion (14), the protrusion is formed on the coupling protrusion (15); wherein the guide block (30) further includes: an embedding holder (34) which is in the shape of a hole and which fits the embedded portion (14); and a side wall (33) whose length forms a protruding length corresponding to the engaging projection (15) and which is embedded in the holder (34) is isolated from the surface of the eyeglass frame (10). The gas mask for spectacles according to claim 1, further comprising: a first latch (21) on one side of the guide rail (20) facing the guide block (30) a length of the guide rail (20) forming a zigzag shape; and a second latch (31) forming a zigzag shape on one side of the guide block (30) facing the first latch (21), and The guide block (30) is restrained in a state in which the guide block (30) is caught on the guide rail (20) while being engaged with the first latch (21).