A tightness adjustment device for an individualized sealing cover of a mask

Abstract

The present invention provides a tightness adjustment device for a personalized sealing cover of a mask, which is composed of a D-ring, a ring seat, a bottom plate, an upper side plate, a tie hole, a hole plate, a lower side plate and a sliding lock assembly. The entire device is a hollow rectangular parallelepiped structure, wherein the ring seat, the bottom plate, the upper side plate, the hole plate and the lower side plate constitute five faces of the rectangular parallelepiped, and the remaining face is hollowed out, and a sliding lock assembly is provided inside the inner shape. The hole on the surface of the hole plate is a tie hole and penetrates the entire layer, and a semicircular D-ring is provided in the middle of the outer surface of the ring seat. The present invention is a lace adjustment device for devices such as masks and face masks. The tightness adjustment of the lace can be realized by one-hand operation. By utilizing the one-way locking principle of the ratchet, the lace is always kept in a tight state in a natural state; the setting of the stop block and the handle makes the loosening and tightening adjustment operation convenient. The entire adjustment device is ingeniously conceived and convenient and effective to operate. The present invention has a reasonable structural design, is easy to manufacture, and has a wide range of applications.

Description

Technical Field

[0001] The invention belongs to clothing accessories and relates to a tightness adjusting device for an individualized sealing cover of a mask, which is used for adjusting the lengths of various laces to achieve target tightening. Background Art

[0002] The fastening accessories of wearing devices such as masks and respirators are a kind of straps or devices that ensure that the wearing device always covers the outer surface of the human body and is comfortable to wear. It can be divided into elastic type and strap type according to the material. Elastic fastening straps are mostly made of rubber bands, commonly known as elastic bands. The length of adult elastic bands is of uniform specifications, and they are mostly ear-hanging or head-loop buckles when used. Strap-type fastening straps are mostly non-woven fabrics, mostly made of materials consistent with the main body material, and tied behind the head or neck when used. Now describe its disadvantages: 1. The elastic tension cannot be adjusted: the size of each person's head circumference determines the tension of the elastic band; 2. The strap type cannot provide continuous tension: the previously tied straps will loosen or become too tight and uncomfortable with the movement of the head and neck; 3. The tension force point is single: the facial structure is complex, and the tension force point of the strap cannot be fully transmitted to the sealing interface of the mask. Summary of the invention

[0003] The purpose of the present invention is to provide a tightness adjustment device for an individualized sealing cover of a mask, which is a mask lacing device with adjustable tension and continuous tension. The device uses the principle of one-way ratchet locking. The device is composed of a D ring 11, a ring seat 12, a bottom plate 13, an upper side plate 14, a tie hole 15, a hole plate 16, a lower side plate 17 and a slide lock assembly 18. The entire device is a hollow rectangular parallelepiped structure, and the ring seat 12, the bottom plate 13, the upper side plate 14, the hole plate 16 and the lower side plate 17 together constitute the five faces of the rectangular parallelepiped, and the remaining one face is hollowed out, and a slide lock assembly 18 is formed inside. The hole on the surface of the hole plate 16 is a tie hole 15 and runs through the entire layer. A semicircular D ring 11 is emitted from the middle position of the outer surface of the ring seat 12, and the slide lock assembly 18 slides in the hollow rectangular parallelepiped structure.

[0004] The slide lock assembly 18 slides in the hollow structure of the main body, and the slide lock assembly 18 is composed of a handle 22, a stop block 23, a fork shaft 24, a handle rod 25, a handle rod shaft 26, a handle rod shaft seat 27, a card shaft 28, a card shaft seat 29, a slide seat 30, a card spring 31, a tie ring 32, a card 33, a connecting rod shaft seat 34, a connecting rod shaft 35 and a connecting rod 36. The four sides of the slide seat 30 of the sheet structure are free. The sheet shaft seat 29, the handle rod shaft seat 27 and the stop block 23 are provided on the upper surface of the slide seat 30; one end of the card 33 is connected to the slide seat 30 through the sheet shaft seat 29 with the card shaft 28 as the axis, and the connecting rod shaft seat 34 is provided on the upper surface of the other end of the card 33, and the card spring 31 is provided on the lower surface of the card 33, and the card spring 31 is fixed to the slide seat 30; one end of the handle rod 25 is connected to the slide seat 30 through the handle rod shaft seat 27 with the handle rod shaft 26 as the axis, and the other end is connected to the handle 22, the handle rod The fork shaft 24 is passed through the middle of both ends of 25; one end of the connecting rod 36 is connected to the card 33 through the connecting rod shaft seat 34 with the connecting rod shaft 35 as the axis, and the other end is forked and connected to the handle rod 25 with the fork shaft 24 as the axis; the stop block 23 is extended from the upper surface of the slide 30 and is close to the handle rod shaft seat 27; the end of the upper surface of the slide 30 close to the card spring 31 is extended with a tie ring 32; the two sides of the slide 30 are inserted into the grooves 21 of the upper side plate 14 and the lower side plate 17 to slide.

[0005] The lower side plate 17 constitutes the side of the main structure, which is composed of a ratchet 19, a plate body 20 and a slide groove 21. The plate body 20 is a rectangular parallelepiped. The ratchet 19 on the upper protruding surface of the side of the plate body 20 forms a ratchet bar and is consistent with the length of the plate body 20. The lower part of the side of the plate body 20 is concave to form a slide groove 21 and is consistent with the length of the plate body 20.

[0006] The upper side plate 14 and the lower side plate 17 have the same structure.

[0007] The present invention is a strap adjustment device for masks, face masks and the like. The strap can be adjusted to be tight by one-hand operation. The one-way locking principle of the ratchet is used to keep the strap in a tight state in a natural state. The setting of the stop block and the handle makes the loosening and tightening adjustment operation convenient. The entire adjustment device is ingeniously designed and conveniently and effectively operated. The present invention has a reasonable structural design, is easy to manufacture, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the present invention.

[0009] Figure 2 It is a rear view schematic diagram of the present invention.

[0010] Figure 3 It is a bottom view schematic diagram of the present invention.

[0011] Figure 4 It is a schematic diagram of the structural decomposition view of the present invention.

[0012] Figure 5 2 is a schematic diagram of the structure of the slide lock assembly 18.

[0013] Figure 6 1 is a side view of the slide lock assembly 18.

[0014] Figure 7 17 is a schematic structural diagram of the lower side plate.

[0015] Figure 8 It is a schematic diagram of the connection between the slide 30 and the card 33 and the side plate.

[0016] Fig. 9 It is a schematic diagram of the angle of the tooth surface of ratchet tooth 19.

[0017] Fig.10 It is to use the schematic diagram. DETAILED DESCRIPTION

[0018] The present invention is further described in conjunction with the accompanying drawings and embodiments.

[0019] Embodiment 1 A device for adjusting the tightness of a mask individualized sealing cover strap

[0020] Reference Figure 1-Figure 4 , a tightness adjustment device for the personalized sealing mask strap of a mask, adopts the principle of one-way ratchet locking, and is composed of a D ring 11, a ring seat 12, a bottom plate 13, an upper side plate 14, a tie hole 15, a hole plate 16, a lower side plate 17 and a slide lock assembly 18. The entire device is a hollow rectangular parallelepiped structure, and the ring seat 12, the bottom plate 13, the upper side plate 14, the hole plate 16 and the lower side plate 17 constitute the five faces of the rectangular parallelepiped, and the remaining side is hollowed out, and a slide lock assembly 18 is arranged inside. The tie hole 15 is opened on the surface of the hole plate 16 and runs through the entire layer; a semicircular D ring 11 is located in the middle of the outer surface of the ring seat 12. The slide lock assembly 18 slides in the hollow rectangular parallelepiped structure.

[0021] Reference Figure 5 and Figure 6, wherein the slide lock assembly 18 slides in the hollow structure of the main body. The structure is composed of a handle 22, a stop block 23, a fork shaft 24, a handle 25, a handle shaft 26, a handle shaft seat 27, a card shaft 28, a card shaft seat 29, a slide seat 30, a card spring 31, a tie ring 32, a card 33, a connecting rod shaft seat 34, a connecting rod shaft 35 and a connecting rod 36. The four sides of the slide seat 30 of the sheet structure are free. Two film shaft seats 29, two handle shaft seats 27 and a stop block 23 are issued on the upper surface of the slide 30; one end of the card 33 is rotatably connected to the slide 30 through the film shaft seat 29 with the card shaft 28 as the axis, and a connecting rod shaft seat 34 is issued on the upper surface of the other end of the card 33, and a card spring 31 is issued on the lower surface of the card 33, and the other end of the card spring 31 is against the slide 30; one end of the handle 25 is rotatably connected to the slide 30 through the handle shaft seat 27 with the handle shaft 26 as the axis, and the other end is connected to the handle 22, and a fork shaft 24 is horizontally issued at the middle position of both ends of the handle 25; one end of the connecting rod 36 is rotatably connected to the card 33 through the connecting rod shaft seat 34 with the connecting rod shaft 35 as the axis, and the other end of the connecting rod 36 is forked and rotatably connected to the handle 25 with the fork shaft 24 as the axis; the stop block 23 is issued from the upper surface of the slide 30 and is close to the handle shaft seat 27; the tie ring 32 is issued at the end of the upper surface of the slide 30. Push the handle 22, the handle 25 pushes the card 33 through the connecting rod 36, and the card 33 rotates around the card shaft 28. The card spring 31 will keep the card 33 with elastic potential energy (always keep it in an upward state); the stop block 23 will limit the rotation angle of the handle 25; the two sides of the slide 30 are inserted into the grooves 21 of the upper side plate 14 and the lower side plate 17 to slide. Push the handle 22, the handle 25 pushes the card 33 through the connecting rod 36, and the card 33 rotates around the card shaft 28. The card spring 31 will keep the card 33 with elastic potential energy (always keep it in an upward state). The stop block 23 will limit the rotation angle of the handle 25, and the handle 25 can only rotate counterclockwise from the vertical position.

[0022] Reference Figure 7 The lower side plate 17 constitutes the side of the hollow rectangular parallelepiped, and is composed of ratchet teeth 19, a plate body 20 and a slide groove 21. The plate body 20 is a rectangular parallelepiped. The upper protruding surface of the side of the plate body 20 emits ratchet teeth 19, and the length is consistent with the plate body 20. The ratchet teeth 19 are unidirectional, that is, each tooth surface has an angle (see Fig. 9 ), the angle between the small angle tooth surface in the positive direction (starting from the orifice plate 16) and the horizontal line is 30 degrees, and the angle between the right angle tooth surface in the reverse direction (starting from the ring seat 12) and the horizontal line is 90 degrees; the two side ends of the card 33 in the slide lock assembly 18 are in contact with the tooth surfaces of the ratchet teeth 19 of the upper side plate 14 and the lower side plate 17 (see Figure 8 ); The lower part of the inner side surface of the plate body 20 is concave to form a slide groove 21, which is consistent with the length of the plate body 20. The side end of the slide seat 30 is formed in the slide groove 21 (see Figure 8). The structure of the upper side plate 14 is the same as that of the lower side plate 17. Figure 7 .

[0023] Example 2 Use of a device for adjusting the tightness of a mask's individualized sealing cover strap

[0024] Reference Fig.10 The purpose of the present invention is to adjust the length of the lace and change the length between the two ends of the lace. The device is generally placed at any position in the middle of the original lace. After the original lace is cut, two ends are formed, one end is connected to the lace ring 32 through the lace hole 15, and the other end is connected to the D ring 11.

[0025] Tightening process: One-handed operation, the thumb applies force to the handle 22, the index finger or other fingers apply force to the outside of the D ring 11, and the two fingers make a closing motion. The handle 22 is pushed, and the stop block 23 will limit the rotation angle of the handle 25 toward the D ring 11, that is, the handle 22 will not tip toward the D ring 11, so as to provide a force point for the thumb. The card spring 31 will keep the card 33 with elastic potential energy, that is, the end edge of the card 33 will always keep in contact with the tooth surface of the ratchet 19. At this time, the tooth body angle in the positive direction is small, and the rotation direction of the card 33 is consistent with the sliding direction. The end edge of the card 33 will slide over the ratchet 19, and no locking phenomenon will occur. The slide seat 30 will move along the slide groove 21 toward the D ring 11, and the lace on the tie ring 32 will move closer to the D ring 11. After letting go, the elasticity of the strap will pull the slide 30 to move in the opposite direction, and the end edge of the card 33 will abut against the ratchet 19. At this time, the angle of the tooth body in the opposite direction is larger, and the rotation direction of the card 33 is opposite to the sliding direction. The end edge of the card 33 will be stuck on the ratchet 19, resulting in a locking phenomenon. That is, the length of the strap will remain in a shortened state.

[0026] Relaxation process: One-handed operation, thumb against handle 22, index finger in D ring 11. Two fingers open and stretch. Handle 22 is pushed, handle 25 pushes card 33 through connecting rod 36. As long as the force applied to card 33 is greater than the friction force (i.e. the friction force of the end edge of card 33 in contact with the tooth surface in the opposite direction of ratchet 19), card 33 rotates, the end edge of card 33 exceeds the height of ratchet 19, the locking force will disappear, the slide 30 will move along the slide groove 21 toward the orifice plate 16, and the lace on the tie ring 32 will move closer to the orifice plate 16. That is, the length of the lace will be extended.

Claims

1. A tightness adjustment device for an individualized sealing cover of a mask, characterized in that: The device is composed of a D ring (11), a ring seat (12), a bottom plate (13), an upper side plate (14), a tie hole (15), a hole plate (16), a lower side plate (17) and a slide lock assembly (18). The entire device is a hollow rectangular parallelepiped structure. The ring seat (12), the bottom plate (13), the upper side plate (14), the hole plate (16) and the lower side plate (17) constitute five faces of the rectangular parallelepiped. The remaining face is hollowed out and has a slide lock assembly (18) inside. The hole (15) is opened on the surface of the hole plate (16) and penetrates the entire layer. A semicircular D ring (11) is emitted from the middle position of the outer surface of the ring seat (12); the lower side plate (17) is composed of ratchet teeth ( The plate (20) is a rectangular parallelepiped, the ratchet teeth (19) on the upper protruding surface of the side of the plate (20) form a ratchet bar, and the lower part of the side of the plate (20) is concave to form the slide groove (21); the upper side plate (14) has the same structure as the lower side plate (17); the slide lock assembly (18) is composed of a handle (22), a stop block (23), a fork shaft (24), a handle rod (25), a handle rod shaft (26), a handle rod shaft seat (27), a card shaft (28), a card shaft seat (29), a slide seat (30), a card spring (31), a tie ring (32), and a card (33) , a connecting rod shaft seat (34), a connecting rod shaft (35) and a connecting rod (36); a film shaft seat (29), a handle shaft seat (27) and a stop block (23) are provided on the upper surface of the slide seat (30); one end of the card (33) is rotatably connected to the slide seat (30) through the film shaft seat (29) with the card shaft (28) as the axis; a connecting rod shaft seat (34) is provided on the upper surface of the other end of the card (33); a card spring (31) is provided on the lower surface of the card (33); and the card spring (31) is fixed to the slide seat (30); one end of the handle rod (25) is rotatably connected to the slide seat (30) through the handle shaft seat (27) with the handle shaft (26) as the axis. The other end is connected to the handle (22), and a fork shaft (24) is extended horizontally through the middle position of the two ends of the handle rod (25); one end of the connecting rod (36) is connected to the card (33) through the connecting rod shaft (35) and the connecting rod shaft seat (34), and the other end is forked and connected to the handle rod (25) with the fork shaft (24) as the axis; the tie ring (32) is extended from the end of the upper surface of the slide seat (30); the two sides of the slide seat (30) are inserted into the slide grooves (21) of the upper side plate (14) and the lower side plate (17) for easy sliding; the two side ends of the card (33) are in contact with the tooth surfaces of the ratchet teeth (19) of the upper side plate (14) and the lower side plate (17).

2. A tightness adjustment device for an individualized sealing cover of a mask according to claim 1, characterized in that: The stop block (23) is close to the handle shaft seat (27).

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