Forehead unshielded breathing mask

Abstract

The utility model discloses a forehead unsheltered breathing mask which comprises a mask body, a left fixing frame and a right fixing frame, the bending position of the left fixing frame is arranged on one side of a supporting frame on the mask body, a left connecting buckle is arranged on the left fixing frame, the left fixing frame is detachably connected with the mask body, and a right connecting buckle is arranged on the right fixing frame. The bent position of the right fixing frame is arranged on the other side of the supporting frame on the mask body, a right connecting buckle is arranged on the right fixing frame, and the right fixing frame is detachably connected with the mask body. After the mask body covers the mouth and the nose, the left fixing frame is located on the left side of the head, the right fixing frame is located on the right side of the head, in the breathing process, the forehead and the nose of a patient are not shielded by the fixing frames, and the discomfort caused by shielding is avoided; when the mask is used, only damaged parts need to be detached and replaced independently, in the transportation process and when the mask is not used, the left fixing frame and the right fixing frame can be detached from the mask body, and transportation and storage are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument equipment field, especially a forehead non-shielding breathing mask. BACKGROUND

[0002] The breathing mask is an important medical equipment, which is connected with the ventilation pipeline of the breathing machine, can help the human body to maintain normal breathing, increase the lung ventilation volume and improve the respiratory function.

[0003] Most of the existing breathing masks are worn on the forehead, and a T-shaped fixing frame is arranged above the mask, when the mask covers the mouth and nose, the T-shaped fixing frame is located in front of the nose bridge and the forehead, this wearing method can shield the nose, eyes and eyebrow of the patient, and the patient will feel uncomfortable after wearing for a long time; some breathing masks do not have a fixing frame on the forehead and nose when worn, but the fixing frame of this breathing mask is usually integrally connected with the mask, and the fixing frame cannot be independently detached, so when one of the fixing frame or the mask body is damaged, the whole needs to be replaced, which is high in cost, and the angle between the fixing frame and the mask is fixed, when the patient with wide face wears it, the fixing frame will be clamped on both sides of the patient's head, which will be very uncomfortable after a long time, and when the patient with narrow face wears it, there will be a large gap between the fixing frame and the two sides of the head, which will also be very uncomfortable after a long time, and the patient cannot have a comfortable wearing experience.

[0004] Therefore, it is necessary to provide a breathing mask without shielding the forehead, which can detach the fixing frame and adjust the angle between the fixing frame and the mask. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at overcoming the defects of the prior art, and provides a forehead non-shielding breathing mask.

[0006] According to one aspect of the utility model, a forehead non-shielding breathing mask is provided, which comprises:

[0007] A mask body;

[0008] A left fixing frame, which is bent, is arranged on one side of the support frame on the mask body, and a left connecting buckle is arranged on the left fixing frame, and the left fixing frame is detachably connected with the mask body; and

[0009] A right fixing frame, which is bent, is arranged on the other side of the support frame on the mask body, and a right connecting buckle is arranged on the right fixing frame, and the right fixing frame is detachably connected with the mask body.

[0010] The forehead non-shielding breathing mask of the utility model, left fixed frame and right fixed frame are connected through bandage, after the mask body covers on the mouth and nose, the left fixed frame is located at the left side of the head, the right fixed frame is located at the right side of the head, the bandage between the left fixed frame and the right fixed frame is fixed on the head, during the breathing process, the forehead and nose of the patient are not shielded by the fixed frame, and the discomfort of shielding does not occur after long wearing, and the left fixed frame and the right fixed frame are all detachably connected with the mask body, the left fixed frame and the right fixed frame can be independently detached, so when one of the left fixed frame, the right fixed frame or the mask body is damaged, the damaged part can be individually detached and replaced, and the whole replacement is not needed, the cost can be reduced, and the left fixed frame and the right fixed frame can be detached from the mask body during the transportation process and when not in use, so that the transportation and storage are facilitated.

[0011] Further, one side of the support frame on the mask body is provided with at least one first plug-in buckle, and the bending position of the left fixed frame is provided with at least one first plug-in slot.

[0012] Therefore, the left fixed frame is detachably connected with the mask body through the cooperation of the first plug-in buckle and the first plug-in slot, when the left fixed frame is installed, the first plug-in buckle on the support frame of the mask body is only plugged into the first plug-in slot on the left fixed frame, and when the left fixed frame is detached, the left fixed frame is only pulled off from the support frame of the mask body, so that the left fixed frame is very convenient to install and detach.

[0013] Further, the free end of the first plug-in buckle is in a slope shape, at least one first through hole is arranged on the first plug-in buckle, and at least one first protrusion is arranged on the side wall of the first plug-in slot.

[0014] When the first plug-in buckle is plugged into the first plug-in slot, the first protrusion is accommodated in the first through hole.

[0015] Therefore, the first plug-in buckle with the free end in a slope shape can be very easily plugged into the first plug-in slot, and in the plugging process, the first protrusion in the first plug-in slot can be very easily slid into the first through hole on the first plug-in buckle, so that the plugging of the first plug-in buckle and the first plug-in slot is firm and not easy to loosen.

[0016] Further, the left fixed frame comprises a left bending part and a left fixed part, the first plug-in slot is arranged on the left bending part, the left connecting buckle comprises a first left connecting buckle and a second left connecting buckle, the first left connecting buckle is arranged on one end of the left bending part, one end of the left fixed part is arranged on the other end of the left bending part, and the second left connecting buckle is arranged on the other end of the left fixed part.

[0017] Therefore, the left fixing frame can be connected with the right fixing frame through the first left connecting buckle and a bandage, and the left fixing frame can be connected with the right fixing frame through the second left connecting buckle and another bandage, and the two bandages are fixed on the head, so that the forehead is not blocked, and the breathing mask can be fixed on the head of the patient firmly and is not easy to be loosened and displaced.

[0018] Further, the left bending part is made of silica gel material.

[0019] Therefore, the first plug-in buckle on one side of the support frame on the mask body can be easily plugged into the first plug-in slot on the left bending part, and the left bending part made of silica gel facilitates the adjustment of the angle between the left fixing frame and the mask body to adapt to different widths of the forehead.

[0020] Further, the other side of the support frame on the mask body is provided with at least one second plug-in buckle, and the bending part of the right fixing frame is provided with at least one second plug-in slot, and the second plug-in buckle is plugged into the second plug-in slot.

[0021] Therefore, the right fixing frame and the mask body are detachably connected through the cooperation of the second plug-in buckle and the second plug-in slot, and when installing the right fixing frame, only the second plug-in buckle on the support frame of the mask body is plugged into the second plug-in slot on the right fixing frame, and when disassembling the right fixing frame, the right fixing frame is pulled off from the support frame of the mask body, so that the right fixing frame is very convenient to assemble and disassemble.

[0022] Further, the free end of the second plug-in buckle is ramp-shaped, the second plug-in buckle is provided with at least one second through hole, and the sidewall of the second plug-in slot is provided with at least one second protrusion.

[0023] When the second plug-in buckle is plugged into the second plug-in slot, the second protrusion is accommodated in the second through hole.

[0024] Therefore, the second plug-in buckle with the ramp-shaped free end can be easily plugged into the second plug-in slot, and during the plugging process, the second protrusion in the second plug-in slot can be easily slid into the second through hole on the second plug-in buckle, so that the plugging of the second plug-in buckle and the second plug-in slot is firm and not easy to be loosened.

[0025] Further, the right fixing frame comprises a right bending part and a right fixing part, the second plug-in slot is arranged on the right bending part, the right connecting buckle comprises a first right connecting buckle and a second right connecting buckle, the first right connecting buckle is arranged on one end of the right bending part, one end of the right fixing part is arranged on the other end of the right bending part, and the second right connecting buckle is arranged on the other end of the right fixing part.

[0026] Therefore, the right fixing frame can be connected with the left fixing frame through the first right connecting buckle and a bandage, and the right fixing frame can be connected with the left fixing frame through the second right connecting buckle and another bandage, and the two bandages are fixed on the head, so that the forehead non-occluded breathing mask can be fixed on the head of the patient firmly and is not easy to be loosened and displaced.

[0027] Further, the right bending part is made of silica gel material.

[0028] Therefore, the second plug-in buckle on the other side of the support frame on the mask body can be very easily plugged into the second plug-in slot on the right bending part, and the right bending part made of silica gel facilitates the adjustment of the angle between the right fixing frame and the mask body to adapt to different widths of the forehead.

[0029] Further, the left fixing frame is provided with a first bendable adjusting part, and the right fixing frame is provided with a second bendable adjusting part.

[0030] Therefore, the left fixing frame can adjust the included angle with the mask body through the first bendable adjusting part, and the right fixing frame can adjust the included angle with the mask body through the second bendable adjusting part, so that the left fixing frame and the right fixing frame can adapt to different widths of the forehead and ensure the comfort of wearing. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a structural schematic view of a forehead non-occluded breathing mask of the utility model;

[0032] Figure 2 It is a structural schematic view of a forehead non-occluded breathing mask of the utility model; Figure 1 It is a split structural schematic view of a forehead non-occluded breathing mask shown in the figure;

[0033] Figure 3 It is a structural schematic view of a forehead non-occluded breathing mask of the utility model; Figure 2 It is a structural schematic view of a forehead non-occluded breathing mask of the utility model;

[0034] Figure 4 It is a structural schematic view of a forehead non-occluded breathing mask of the utility model; Figure 1 It is a structural schematic view of a forehead non-occluded breathing mask of the utility model;

[0035] Figure 5 It is a structural schematic view of a forehead non-occluded breathing mask of the utility model; Figure 1 It is a structural schematic view of a forehead non-occluded breathing mask of the utility model. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0037] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. It should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components.

[0038] See Figures 1 to 5 A breathing mask that does not obstruct the forehead includes a mask body 1, a left fixing frame 2 and a right fixing frame 3.

[0039] See Figure 1 The mask body 1 is provided with a support frame 11 and a bend 14. One end of the bend 14 is inserted and fixed in the support frame 11. The bend 14 is used to connect to the ventilation line of the ventilator. After wearing the mask body 1, the ventilator can provide respiratory support to the patient through the bend 14.

[0040] See Figure 1 , Figure 2 and Figure 4 The left fixing frame 2 is bent, and the bent part of the left fixing frame 2 is installed on one side of the support frame 11 on the mask body 1. Figure 1 On the left side of the central support frame 11, a left connecting buckle is provided on the left fixing frame 2, and the left fixing frame 2 is detachably connected to the mask body 1; specifically, see [reference needed]. Figures 1 to 4 The left fixing frame 2 includes a left bending portion 201 and a left fixing portion 202. The left connecting buckle includes a first left connecting buckle 22 and a second left connecting buckle 23. The first left connecting buckle 22 is disposed on one end of the left bending portion 201 and is integrally formed with the left bending portion 201. One end of the left fixing portion 202 is fixed to the other end of the left bending portion 201. The second left connecting buckle 23 is disposed on the other end of the left fixing portion 202 and is integrally formed with the left fixing portion 202. One side of the support frame 11 on the mask body 1 ( Figure 1The first plug-in buckle 12 is formed on the left side of the support frame 11, and the first plug-in slot 21 adapted to the first plug-in buckle 12 is formed on the bending position, i.e., the left bending part 201, of the left fixing frame 2. The first plug-in buckle 12 on the support frame 11 is plugged into the first plug-in slot 21 on the left bending part 201, and the left fixing frame 2 is detachably connected to the mask body 1 through the cooperation of the first plug-in buckle 12 and the first plug-in slot 21. When the left fixing frame 2 is installed, the first plug-in buckle 12 on the support frame 11 of the mask body 1 is only plugged into the first plug-in slot 21 on the left fixing frame 2, and when the left fixing frame 2 is detached, the left fixing frame 2 is only pulled off the support frame 11 of the mask body 1, so that the left fixing frame 2 is very convenient to install and detach.

[0041] Referring to Figure 3 , the free end of the first plug-in buckle 12 on the support frame 11 of the mask body 1 is ramp-shaped, and the first plug-in buckle 12 is formed with a first through hole 121, referring to Figure 4 , the first plug-in slot 21 on the left bending part 201 is formed with a first protrusion 211 on the side wall with a wider width, and the free end of the first protrusion 211 and the opposite side wall of the side wall on which the first protrusion 211 is arranged are left with a gap to facilitate the insertion of the free end of the first plug-in buckle 12, referring to Figure 3 and Figure 4 , when the first plug-in buckle 12 is plugged into the first plug-in slot 21, the first protrusion 211 in the first plug-in slot 21 is accommodated in the first through hole 121; the first plug-in buckle 12 with the ramp-shaped free end can be very easily plugged into the first plug-in slot 21, and during the plugging process, the first protrusion 211 in the first plug-in slot 21 can be very easily slid into the first through hole 121 on the first plug-in buckle 12, ensuring that the first plug-in buckle 12 and the first plug-in slot 21 are firmly plugged and not easily loosened.

[0042] In the embodiment, the number of the first through holes 121 on the first plug-in buckle 12 is two, and correspondingly, the number of the first protrusions 211 on the side wall of the first plug-in slot 21 is also two. When the first plug-in buckle 12 is plugged into the first plug-in slot 21, the two first protrusions 211 in the first plug-in slot 21 are accommodated in the two first through holes 121 on the first plug-in buckle 12, thereby ensuring that the first plug-in buckle 12 and the first plug-in slot 21 are firmly plugged and not easily loosened. In other embodiments, according to the installation needs, the number of the first through holes 121 on the first plug-in buckle 12 and the number of the first protrusions 211 on the side wall of the first plug-in slot 21 can be adjusted, as long as the first protrusions 211 can be accommodated in the first through holes 121, and the number and position of the two are adapted.

[0043] In the embodiment, the number of the first plug-in buckles 12 is two, and the number of the first plug-in slots 21 is two, which are matched in position, and the two first plug-in buckles 12 can be respectively plugged in the two first plug-in slots 21. In other embodiments, the number of the first plug-in buckles 12 and the number of the first plug-in slots 21 can be adjusted to ensure that the number of the two is the same and the position is matched.

[0044] In the embodiment, the left bending part 201 is made of silica gel material, so that the two first plug-in buckles 12 on one side of the support frame 11 on the mask body 1 can be very easily plugged in the two first plug-in slots 21 on the left bending part 201, and the left bending part 201 made of silica gel facilitates the adjustment of the angle between the left fixing frame 2 and the mask body 1 to adapt to different widths of the face.

[0045] The left fixing frame 2 is provided with a first bendable adjusting part 24. Specifically, referring to Figure 1 , Figure 2 and Figure 4 , the first bendable adjusting part 24 is arranged on the left bending part 201 of the left fixing frame 2, and a section of the left bending part 201 close to the end connected with the left fixing part 202 is flat to form the first bendable adjusting part 24. The left bending part 201 can be freely bent at the position of the first bendable adjusting part 24, so that the left fixing part 202 of the left fixing frame 2 can adjust the included angle between the left fixing part 202 and the mask body 1 through the first bendable adjusting part 24 to adapt to different widths of the face.

[0046] The right fixing frame 3 is the same as the left fixing frame 2, and is symmetrically arranged with the support frame 11 of the mask body 1. Referring to Figure 1 , Figure 2 and Figure 5 , the right fixing frame 3 is bent, and the bending position of the right fixing frame 3 is arranged on the other side of the support frame 11 on the mask body 1 (the right side of the support frame 11 in Figure 1 ), and the right fixing frame 3 is provided with a right connecting buckle, and the right fixing frame 3 is detachably connected with the mask body 1. Specifically, referring to Figure 1 , Figure 2 , Figure 3 and Figure 5 , the right fixing frame 3 comprises a right bending part 301 and a right fixing part 302, the right connecting buckle comprises a first right connecting buckle 32 and a second right connecting buckle 33, the first right connecting buckle 32 is arranged on one end of the right bending part 301 and is integrally formed with the right bending part 301, one end of the right fixing part 302 is fixed on the other end of the right bending part 301, and the second right connecting buckle 33 is arranged on the other end of the right fixing part 302 and is integrally formed with the right fixing part 302, and the other side of the support frame 11 on the mask body 1 (the right side of the support frame 11 in Figure 1The second plug-in buckle 13 is formed on the right side of the support frame 11, and the second plug-in groove 31 adapted to the second plug-in buckle 13 is formed on the bending position of the right fixing frame 3, i.e. the right bending part 301. The second plug-in buckle 13 on the support frame 11 is plugged into the second plug-in groove 31 on the right bending part 301. The right fixing frame 3 is detachably connected to the mask body 1 through the cooperation of the second plug-in buckle 13 and the second plug-in groove 31. When the right fixing frame 3 is installed, the second plug-in buckle 13 on the support frame 11 of the mask body 1 is only plugged into the second plug-in groove 31 on the right fixing frame 3. When the right fixing frame 3 is detached, the right fixing frame 3 is only pulled off from the support frame 11 of the mask body 1. The installation and detachment of the right fixing frame 3 are very convenient.

[0047] Referring to Figure 3 , the free end of the second plug-in buckle 13 on the support frame 11 of the mask body 1 is ramp-shaped, and the second plug-in buckle 13 is formed with a second through hole 131. Referring to Figure 5 , the second plug-in groove 31 on the right bending part 301 is formed with a second protrusion 311 on the sidewall with a wider width. The free end of the second protrusion 311 and the opposite sidewall of the sidewall on which the second protrusion 311 is arranged are left with a gap to facilitate the insertion of the free end of the second plug-in buckle 13. Referring to Figure 3 and Figure 5 When the second plug-in buckle 13 is plugged into the second plug-in groove 31, the second protrusion 311 in the second plug-in groove 31 is accommodated in the second through hole 131. The second plug-in buckle 13 with the ramp-shaped free end can be very easily plugged into the second plug-in groove 31, and during the plugging process, the second protrusion 311 in the second plug-in groove 31 can be very easily slid into the second through hole 131 on the second plug-in buckle 13, ensuring that the second plug-in buckle 13 and the second plug-in groove 31 are firmly plugged and not easily loosened.

[0048] In the embodiment, the number of the second through holes 131 on the second plug-in buckle 13 is two, and correspondingly, the number of the second protrusions 311 on the sidewall of the second plug-in groove 31 is also two. When the second plug-in buckle 13 is plugged into the second plug-in groove 31, the two second protrusions 311 in the second plug-in groove 31 are accommodated in the two second through holes 131 on the second plug-in buckle 13, thereby ensuring that the second plug-in buckle 13 and the second plug-in groove 31 are firmly plugged and not easily loosened. In other embodiments, according to the installation needs, the number of the second through holes 131 on the second plug-in buckle 13 and the number of the second protrusions 311 on the sidewall of the second plug-in groove 31 can be adjusted to ensure that the second protrusions 311 can be accommodated in the second through holes 131, and the number and position of the two are adapted.

[0049] In the embodiment, the number of the second plug-in buckles 13 is two, and the number of the second plug-in slots 31 is two, which are matched in position, and the two second plug-in buckles 13 can be respectively plugged in the two second plug-in slots 31. In other embodiments, the number of the second plug-in buckles 13 and the number of the second plug-in slots 31 can be adjusted to ensure that the number of the two is the same and matched in position.

[0050] In the embodiment, the right bending part 301 is made of silica gel material, so that the two second plug-in buckles 13 on one side of the support frame 11 on the mask body 1 can be very easily plugged in the two second plug-in slots 31 on the right bending part 301, and the right bending part 301 made of silica gel is convenient to adjust the angle between the right fixing frame 3 and the mask body 1 to adapt to different widths of the face.

[0051] The right fixing frame 3 is provided with a second bendable adjusting part 34. Specifically, referring to Figure 1 , Figure 2 and Figure 5 , the second bendable adjusting part 34 is arranged on the right bending part 301 of the right fixing frame 3, and a section of the right bending part 301 close to the end connected with the right fixing part 302 is flat to form the second bendable adjusting part 34. The right bending part 301 can be freely bent at the position of the second bendable adjusting part 34, so that the right fixing part 302 of the right fixing frame 3 can adjust the included angle between the right fixing part 302 and the mask body 1 through the second bendable adjusting part 34 to adapt to different widths of the face.

[0052] Referring to Figures 1 to 5The forehead non-shielding breathing mask, the left fixing frame 2 is connected with the first right connecting buckle 32 of the right fixing frame 3 through the first left connecting buckle 22 and a bandage, the left fixing frame 2 is connected with the second right connecting buckle 33 of the right fixing frame 3 through the second left connecting buckle 23 and another bandage, after the mask body 1 covers on the mouth and nose, the left fixing frame 2 is located at the left side of the head (facing the direction of the patient's face), the right fixing frame 3 is located at the right side of the head (facing the direction of the patient's face), the bandage between the left fixing frame 2 and the right fixing frame 3 is fixed on the head, in the breathing process, the forehead, nose and eyebrow of the patient are not shielded by the fixing frame, and the discomfort caused by shielding does not occur after long wearing time, and the left fixing frame 2 and the right fixing frame 3 are detachably connected with the mask body, the left fixing frame 2 and the right fixing frame 3 can be independently detached, so that when one of the left fixing frame 2, the right fixing frame 3 and the mask body 1 is damaged, the damaged component can be individually detached and replaced, so that the whole replacement is not needed, the cost can be reduced, and the left fixing frame 2 and the right fixing frame 3 can be detached from the mask body 1 during transportation and when not in use, so that transportation and storage are facilitated.

[0053] The above only some embodiments of the utility model are described, and the technical means of the utility model is explained, and is not limited to the technical range of the utility model. The person skilled in the art makes the obvious improvement to the utility model according to the existing common knowledge, and all falls into the protection range of the utility model.

Claims

1. A forehead shield respirator, comprising: The utility model relates to a face mask, which comprises a face mask body, a left fixing frame, a right fixing frame and a support frame. The left fixing frame is bent, and the bending position of the left fixing frame is arranged on one side of the support frame on the face mask body. The right fixing frame is bent, and the bending position of the right fixing frame is arranged on the other side of the support frame on the face mask body. The support frame on the face mask body is provided with at least one first plug-in buckle on one side.

2. The forehead shield respirator of claim 1, wherein, The first plug-in buckle is provided with at least one first through hole.

3. The forehead shield respiratory mask of claim 2, wherein, The first plug-in slot is provided with at least one first protrusion on the side wall. When the first plug-in buckle is inserted into the first plug-in slot, the first protrusion is accommodated in the first through hole.

4. The forehead shield respiratory mask of claim 3, wherein, The left fixing frame comprises a left bending part and a left fixing part.

5. The forehead shield respiratory mask of claim 4, wherein, The first plug-in slot is arranged on the left bending part.

6. The forehead shield respiratory mask of claim 1, wherein, The left connecting buckle comprises a first left connecting buckle and a second left connecting buckle.

7. The forehead shield respiratory mask of claim 6, wherein, The first left connecting buckle is arranged on one end of the left bending part. The other end of the left fixing part is arranged on the other end of the left bending part.

8. The forehead shield respiratory mask of claim 7, wherein, The other end of the second left connecting buckle is arranged on the other end of the left fixing part.

9. The forehead shield respiratory mask of claim 8, wherein, The left bending part is made of silica gel material.

10. The forehead shield respiratory mask according to any one of claims 1 to 9, wherein, The support frame on the face mask body is provided with at least one second plug-in buckle on the other side. The right fixing frame is provided with at least one second plug-in slot on the bending position. The second plug-in buckle is provided with at least one second through hole. The second plug-in slot is provided with at least one second protrusion on the side wall. When the second plug-in buckle is inserted into the second plug-in slot, the second protrusion is accommodated in the second through hole. The right fixing frame comprises a right bending part and a right fixing part. The second plug-in slot is arranged on the right bending part. The right connecting buckle comprises a first right connecting buckle and a second right connecting buckle. The first right connecting buckle is arranged on one end of the right bending part. The other end of the second right connecting buckle is arranged on the other end of the right fixing part. The right bending part is made of silica gel material. The left fixing frame is provided with a first bendable adjusting part. The right fixing frame is provided with a second bendable adjusting part.

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