CN211900278U - Building energy-saving outward casement window with safety guardrail and mosquito-proof function - Google Patents

Abstract

The invention relates to a building energy-saving outer casement window with safety guardrail and anti-mosquito functions, comprising a door and window frame, a door and window sash and a guardrail. There is a detachable invisible screen window, the invisible screen window includes a screen net, a screen fan handle and a reel respectively arranged on the left and right sides of the screen net, and a sliding chain respectively arranged on the upper and lower sides of the screen net. The inner side of the yarn fan is provided with a sliding rail corresponding to the sliding chain, and the end of the yarn fan handle is provided with a lock bar, which cooperates with the bar-shaped piece arranged on the middle stile for elastic locking. The invention has the characteristics of anti-mosquito, anti-fall, glass can be built-in and low cost.

Description

A building energy-saving outer casement window with safety guardrail and anti-mosquito functions

technical field

The invention relates to an external casement window for building energy-saving and heat insulation, in particular to a structure in which the opening fan is provided with a removable invisible mosquito screen window, a removable anti-falling guardrail, and a lower fixed window capable of installing guardrails.

Background technique

The building energy-saving external casement windows used in the existing engineering field have no other functions except for opening, closing, and energy-saving functions of doors and windows, such as: anti-mosquito function, the opening fan has no anti-fall function for children, and the fixed window has no function. Equipped with guardrail function.

In order to meet the completion acceptance standards stipulated in the "Residential Design Specifications" (GB50096-2011), the existing building energy-saving casement windows need to be installed with zinc steel protective railings before completion acceptance; Space; the insulating glass of the external casement window generally adopts the outdoor installation process, which has the hidden danger of the safety of the construction personnel and the risk of glass falling from the building; the use of the conversion frame can realize the interior installation of the insulating glass, but the cost of aluminum alloy doors and windows is significantly increased.

Due to the above-mentioned problems and design flaws, after most of the developers have delivered the houses to the owners through the completion acceptance, because the doors and windows installed by the developers do not have the above-mentioned functions, the owners will start to dismantle the old windows and replace them with new ones. Unsightly zinc steel guardrails that also take up indoor space. In addition to the ventilation function of the opening fan, it is necessary to replace the "system doors and windows" with "mosquito screen fans or children's anti-fall guardrails" that have individual needs. And because "system doors and windows" in order to realize anti-mosquito screen fan, children's anti-falling guardrail, the aluminum profile selection series is required to be wider (the width of the cross-section), and the specifications of common system windows are at least between 90mm and 145mm series or larger. The requirements of the scope scale can realize the above functions. Therefore, the cost of system doors and windows is generally high, generally between 800-1800 yuan / square meter, which is unbearable for ordinary families, especially working families.

SUMMARY OF THE INVENTION

The purpose of the present invention is to improve and innovate the shortcomings and problems existing in the background technology, and provide a building energy-saving outer casement door and window structure with anti-mosquito, anti-fall, glass can be installed inside and low cost.

The technical scheme of the present invention is to construct a building energy-saving outer casement window with safety guardrail and anti-mosquito function, which includes a door and window frame, a door and window sash, and a guardrail. A detachable invisible screen window is arranged on the door and window frame, and the invisible screen window includes a screen net, a screen fan handle and a reel respectively arranged on the left and right sides of the screen net, and a sliding chain respectively arranged on the lower and lower sides of the screen net. The inner sides of the upper and lower sides of the frame are provided with sliding rails corresponding to the sliding chains, and the upper and lower ends of the yarn fan handle are respectively provided with handle heads corresponding to the sliding rails. and two bobbin covers, the bobbin covers are arranged at both ends of the bobbin box and are respectively provided with opposite fixed rotating shafts and movable rotating shafts. It is located outside the torsion spring set, and is only fixed with one end of the torsion spring in the torsion spring set. The end of the movable shaft is provided with a shaking hand, and the side of the end is provided with a first limit hole, and the cover of the yarn spool connected to the movable shaft is provided with A second limit hole corresponding to a limit hole;

The side of the yarn tube box facing away from the opening is connected to the outer frame clip, the outer frame clip is connected to the door and window frame, and the door and window frame is also provided with an inner frame clip, which is located on the indoor side and in front of the yarn tube cover ( is located on the indoor side), a guide roller is arranged between the inner frame clip and the shaft cylinder, and the guide roller is located on the extension line of the moving track of the yarn fan handle;

The end of the inner frame clip is connected to the guardrail through the locking rubber strip;

The yarn fan handle is L-shaped as a whole, one side of the L-shape is a first handle, and the other side is provided with a depression forming a second handle, and the end of the second handle away from the first handle is connected to the gauze;

The sash frame and glass of the door and window sash can be embedded between the door and window frame and the middle stile, and a limit strip is arranged on one side of the sash frame;

The L-shaped corner of the handle of the yarn fan is provided with a lock bar, and the middle stile opposite to the bobbin box is provided with a bar-shaped piece with a groove corresponding to the lock bar, and the lock bar can be elastically locked with the bar-shaped piece. .

A latch is also set between the yarn fan handle and the middle stile.

The locking rubber strip is in the shape of an inverted figure as a whole, the bottom is closed, the inner sides of the two feet are provided with opposite first enclosing protrusions, and the ends away from the two feet are respectively provided with second grooves concave from the outside to the inside; the A receiving slot is arranged on the inner frame clip to accommodate the locking rubber strip, and a second enclosing protrusion is arranged on the receiving slot to lock the second clipping slot; a plug with an enlarged end is arranged on the guardrail, and the plug can be removed by a third A closing protrusion is caught in the locking strip.

The connecting side of the inner frame clip and the locking rubber strip is connected to the door and window frame through a spring pin.

The handle head includes a sliding block and a fixing pin inserted into the second handle. The sliding block is provided with a sliding rail groove matched with the sliding rail, and one end of the sliding block is provided with a third slot for accommodating the gauze, and is provided with The pin hole is used to install the pin to fix the gauze in the third slot.

The guardrail is connected with the door and window frame or the stile by the locking strip.

A four-way profile is arranged on the middle stile, a pair of leftward tabs 49 are arranged on the left side of the four-way profile, and are used to connect with the middle stile. The upper part of the four-way profile is provided with a storage slot for accommodating the locking rubber strip. For connecting the guardrail, the right side of the four-way profile is provided with a downward rubber strip installation groove, which is used to install the bread rubber strip sealed with the door and window sash, and the right-hand strip installation groove is set at the bottom of the four-way profile for the installation of the belt. The strip part of the groove is matched with the fixing pin to fix the handle of the yarn fan.

One of the pair of tabs of the four-way profile is located at the upward extension of the four-way profile, and the frame of the guardrail is provided with a baffle with an arcuate bend, so that when the plug on the frame of the guardrail is inserted downward into the receiving slot, The flaps cover the edges of the stiles.

The cross-section of the bar-shaped member 50 is a shape in which the positive E and the negative E are opposite and the bottoms are connected, and two symmetrical barbs 54 are arranged on the outer side, pointing to the opening direction, and the bar-shaped member mounting groove 51 is U-shaped. Barb grooves 55 which are matched with the barbs 54 are provided on the inner sides of the two sides.

The gauze is stainless steel gauze.

Advantages and beneficial effects of the present invention:

Under the premise of not increasing the aluminum material series, that is, the width of the cross section of the aluminum material, and not increasing the amount of aluminum material for doors and windows, the present invention can realize the The "multi-function" of doors and windows has (1) the function of invisible mosquito-proof window, (2) the function of opening the fan and the function of preventing children from falling, (3) the function of fixing the window guardrail, with the remarkable features of assembled and detachable, invisible mosquito-proof Screens and child fall guards can be "removed" for easy maintenance and firefighting.

Such advantages are: 1. when adopting the multifunctional door and window of the present invention, because the fixed window guardrail is integrated with the door and window, the developer or the builder can handle the completion acceptance without installing the zinc steel guardrail, and the developer saves the cost , The user saves the use of the indoor space; 2. The opening part is equipped with a guardrail for children to prevent falling, and the user no longer needs to install an additional "stainless steel anti-theft window". When a fire occurs in a high-rise building, the stainless steel anti-theft window is not conducive to fire rescue. Many big cities have banned the installation of "stainless steel anti-theft windows" outdoors. The "children's anti-fall guardrail" of the present invention is a "removable" type. When a fire occurs and needs to be rescued, firefighters do not need "special window breaking tools". Personnel can push hard from the outside to the room, and then they can open the children's anti-fall guardrail and enter the room for rescue; when the hardware, hinge, and invisible mosquito screen of the opening fan need to be replaced or repaired, adults can forcefully pull inward. If it exceeds the deformation limit of the clamping rubber strip of the EPDM butterfly rubber strip, the guardrail can be disassembled. This "removable" fall guardrail is designed for adults and cannot be dismantled by the strength of children. 3. There is an invisible screen window in the opening part, which solves the problem that there is no anti-mosquito screen window function in the opening sash part of the engineering window, and also solves the embarrassment that the invisible screen window cannot use the stainless steel screen to prevent rodent bites.

By adopting the present invention, it can be realized that the developer does not increase the cost, and the user no longer needs to dismantle the old window to replace the new window because of the single door and window function, which saves the cost of the developer or the construction unit and the cost of the user to replace the window. The present invention integrates energy saving, environmental protection and saving. The social resources are as one, reducing the repeated production of aluminum materials, reducing carbon dioxide emissions, reducing bath noise pollution, reducing sewage pollution, eliminating potential safety hazards, and ultimately saving social resources that are already very tight. The inner side of the frame of the guardrail and the inner side of the window frame are basically in the same vertical plane, which is beautiful and does not occupy the indoor area.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the embodiment.

FIG. 2 is an A-A sectional view of FIG. 1 .

FIG. 3 is a B-B sectional view of FIG. 1 .

Figure 4 is an exploded view of the structure of the invisible screen.

Figure 5 is a schematic diagram of the state in which the invisible screen window is closed and the door and window sash is opened.

Figure 6 is a schematic diagram of the opening state of the invisible screen window (the door and window sash is not drawn).

FIG. 7 is a schematic view of the structure of the four-way profile in the embodiment.

FIG. 8 is a schematic diagram of the installation relationship between the strip element and the mounting groove of the strip element in FIG. 7 .

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It should be noted that when an element is referred to as being "disposed" on another element, it can be directly disposed or connected to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art of this invention. The terms used in the specification are only for the purpose of describing specific implementations, and are not intended to limit the present invention.

Example 1

As shown in Figure 1-6, a building energy-saving external casement window with safety guardrail and anti-mosquito function includes a door and window frame 1, a door and window sash 2, and a guardrail 3. One end of the door and window sash 2 is connected to the door and window frame 1. One side is hinged through a hinge, and the door and window frame is provided with a detachable invisible screen 4, and the invisible screen 4 includes a stainless steel screen 5, a screen fan handle 6 and a reel that are respectively arranged on the left and right sides of the screen 5. 7. The sliding chains 8 are respectively arranged on the upper and lower sides of the gauze 5. The inner sides of the upper and lower sides of the door and window frame 1 are provided with sliding rails 9 corresponding to the sliding chains 8. The upper and lower ends of the yarn fan handle 6 The handle heads 10 corresponding to the slide rails 9 are respectively provided. The reel 7 includes a spool box 11, a shaft spool 12 and two spool covers 13. The spool covers 13 are arranged in the spool box 11. The two ends of the shaft are respectively provided with a fixed rotating shaft 14 and a movable rotating shaft 43. A torsion spring kit 44 is arranged between the fixed rotating shaft 14 and the movable rotating shaft 43. One end of the torsion spring 41 in the kit 44 is fixed, the side of the yarn spool box 11 is open, the shaft tube 12 is provided with three first clamping slots 15, and one side of the gauze 5 is clamped by the clamping rubber strip 46. In one of the first card slots 15, the end of the movable shaft 43 is provided with a handle 17, and the side of the end is provided with a first limiting hole 56, and the bobbin cover 13 connected to the movable shaft 43 is provided with a A second limit hole corresponding to the limit hole 56, when the rocker 17 drives the movable shaft 43 to rotate until the first limit hole 56 is aligned with the second limit hole, a screw or a “split pin” can be inserted through the first limit hole 56 and the second limit hole to fix it to adjust the torsion force of the torsion spring 41, the movable shaft 43 and the corresponding bobbin cover 13 can also be set to indicate whether the first limit hole and the second limit hole are aligned arrows;

The side of the yarn spool box 11 facing away from the opening is connected to the outer frame clip 18, the outer frame clip 18 is connected to the door and window frame 1, and the door and window frame 1 is also provided with an inner frame clip 19, which is located on the indoor side, the yarn In front of the cylinder cover 13 (located on the indoor side), a guide roller 45 is arranged between the inner frame clip 19 and the shaft cylinder 12, and the guide roller 45 is located on the extension line of the moving track of the yarn fan handle 6;

The end of the inner frame clip 19 is connected to the guardrail 3 through the locking rubber strip 20;

The yarn fan handle 6 is L-shaped as a whole, one side of the L-shape is the first handle 22, and the other side is provided with a depression forming a second handle 23, and the end of the second handle 23 away from the first handle 22 connects the yarn. net 5;

A lock bar 24 is provided at the L-shaped corner of the yarn fan handle 6, and a slotted bar 50 corresponding to the lock bar 24 is provided on the middle stile 25 opposite to the yarn spool box 11. The lock bar 24 Elastically lockable with strip 50 . The sash frame and glass of the door and window sash 2 can be embedded between the door and window frame 1 and the stile 25, and a limit bar 27 is provided on one side of the sash frame.

The locking rubber strip 20 is in the shape of an inverted figure as a whole, and the bottom is closed (the direction here is based on the drawing in FIG. 3 as an example, and the installation direction in actual application is not limited), and the inner sides of the two feet are provided with relative first A closing protrusion 28, the ends of the two feet away from each other are respectively provided with a second card slot 29 concave from the outside to the inside; A second enclosing protrusion 31 for locking the second slot 29 is arranged thereon; a plug 32 with an enlarged end is arranged on the guardrail 3 , and the plug 32 can be clamped in the locking rubber strip 20 by the first enclosing protrusion 28 .

The connecting side of the inner frame clip 19 and the locking rubber strip 20 is connected to the door and window frame 1 through a spring pin 33 .

The handle head 10 includes a sliding block 39 and a fixing pin 34 inserted into the second handle 23. The sliding block 39 is provided with a sliding rail groove 35 that cooperates with the sliding rail 9, and one end of the sliding block 39 is provided with an accommodation gauze. The third slot 36 of the 5, and a pin hole 37 is provided for installing a pin to fix the gauze 5 in the third slot 36.

The guardrail 3 is connected with the door and window frame 1 or the middle stile 25 through the locking rubber strip 20 .

As shown in FIG. 7 , a four-way profile 47 is provided on the middle stile 25 , and a pair of leftward tabs 49 are arranged on the left side of the four-way profile 47 for connecting with the middle stile 25 . The four-way profile 47 The upper part is provided with a receiving groove 30 for accommodating the locking rubber strip 20, which is used to connect the guardrail 3, and the right side of the four-way profile 47 is provided with a downward rubber strip installation groove 51 for installing the bread rubber strip 48 sealed with the door and window sash. The bottom of the profile 47 is provided with a rightward strip-shaped member installation groove 52 for installing the strip-shaped member 50 with a groove, so that it cooperates with the fixing pin 24 and fixes the yarn fan handle 6 . One of the pair of tabs 49 of the four-way profile 47 is located where the four-way profile 47 extends upward, and the frame of the guardrail 3 is provided with a baffle 53 with an arcuate bend, so that the plug 32 on the frame of the guardrail 3 is provided. When inserted into the receiving slot 30 downward, the baffle 53 covers the edge of the stile 25, which is on the same plane as the window frame on the interior surface, and can be set at an angle of 45 degrees, which is beautiful.

As shown in FIG. 8 , the cross-section of the bar-shaped member 50 is a shape in which the positive E and the negative E are opposite and the bottoms are connected. 51 is U-shaped, and barb grooves 55 matched with the barbs 54 are provided on the inner sides of both sides of the opening.

The technical problem to be solved by the present invention is mainly aimed at the field of housing construction engineering. The existing building energy-saving casement doors and windows (houses built by developers or investors) in the field of real estate construction generally use 50-80 series, 50-80 series. Due to the limitation of the section width, the aluminum door and window profiles between the 80 series only realize the function of "opening and closing" the opening fan, but do not have the anti-mosquito function. For the railing function, it is necessary to install zinc steel protective railings before completion acceptance; insulating glass generally adopts outdoor installation process, and there are safety risks such as personnel safety risks and glass falling risks; when using "conversion frame aluminum profiles", the interior of insulating glass can be realized , but significantly increases the cost of aluminum alloy doors and windows and other disadvantages.

The frame material of the heat-insulating casement window has the same mold for the indoor and outdoor surfaces, and the stile material is the same mold for indoor and outdoor, which is common inside and outside. This design can reduce the main profile aluminum mold, reduce inventory varieties, and increase aluminum material utilization;

The notch width of frame material, middle stile material and fan material is designed as a hinge notch (K groove or C groove) of uniform size, which is convenient for fixing the window and opening the glass line of the sash, reducing the glass line of aluminum profile mold, Reduce the inventory of glass pressing varieties and improve the utilization rate of glass pressing aluminum materials.

Such a design can also realize that the main aluminum profiles of the inward-opening windows and the outward-opening windows are common, that is, they can be opened inwardly or outwardly. The fixed glass can be installed inside the insulating glass without adding a conversion frame, saving aluminum.

The sliding mechanism (slide rail, vertical frame, etc.) of the invisible screen can be of the same profile, with plastic chutes embedded in it, and the upper and lower plastic handle heads with opposite directions at both ends of the handle. After the hidden yarn is shrunk to the proper position, it will no longer enter the yarn box. The plastic head is assembled on both ends of the aluminum material of the handle to form the handle of the invisible screen. The plastic head is provided with a slider and a small hole, and the small hole is used to fix the screen. The slider is used to move in the slideway of the upper and lower rails to realize the stretching and shrinking of the screen window. Because the upper and lower handle head sliders enter the upper and lower slideway grooves, and the left or right hidden yarn has a lock bar, it can not only prevent the screen from wrinkling, but also It can prevent the wind from blowing the yarn open, achieve the purpose of preventing mosquitoes, and also play the role of sealing and preventing the handle from rebounding.

When the invisible screen window is in a retracted and static state, the handle of the screen fan is blocked by the inner frame clip and cannot be used. At this time, the first handle is stuck on the yarn tube box to prevent the handle of the screen fan from being further retracted. When in use, the first handle is the traction handle, and the hidden yarn is gently pulled out until it leaves the inner frame strip, and the second handle that is recessed is the normal "handle".

The connection between the gauze of the hidden yarn, the yarn bobbin and the yarn fan handle is embedded, which solves the embarrassment that the invisible gauze on the market can only be made of nylon mesh and is bonded to the yarn bobbin with double-sided tape. Stainless steel screen mesh is used as invisible screen to solve the purpose of preventing rodent bites.

The embodiments of the present invention are only descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Various modifications and improvements made should fall within the protection scope of the present invention, and the technical content claimed in the present invention has been fully recorded in the claims.

Claims (8)

1. The utility model provides an energy-conserving outer flat-open window of building with safety barrier, mosquito-proof function which characterized in that: the door and window comprises a door and window frame, a door and window sash and a guardrail, wherein one end of the door and window sash is hinged with one side of the door and window frame, a detachable invisible screen window is arranged on the door and window frame, the invisible screen window comprises a screen mesh, a screen sash handle and a winding drum which are respectively arranged at the left side and the right side of the screen mesh, and sliding chains which are respectively arranged at the upper side and the lower side of the screen mesh, sliding rails corresponding to the sliding chains are respectively arranged at the inner sides of the upper side and the lower side of the door and window frame, handle sealing heads corresponding to the sliding rails are respectively arranged at the upper end and the lower end of the screen sash handle, the winding drum comprises a screen drum box, a shaft drum and two screen drum sealing covers, the screen drum sealing covers are arranged at the two ends of the screen drum box and are respectively provided with a fixed rotating shaft and a movable rotating shaft which are opposite to each other, a torsion spring sleeve is arranged between the fixed rotating, the shaft barrel is provided with at least one first clamping groove, one edge of the gauze is clamped in one of the first clamping grooves through a clamping adhesive tape, the end part of the movable rotating shaft is provided with a handle, the side surface of the end part is provided with a first limiting hole, and a gauze barrel sealing cover connected with the movable rotating shaft is provided with a second limiting hole corresponding to the first limiting hole;

one side of the yarn barrel box, back to the opening, is connected with an outer frame clamping strip, the outer frame clamping strip is connected with a door and window frame, an inner frame clamping strip is further arranged on the door and window frame and positioned on the indoor side and in front of the yarn barrel sealing cover, a guide roller is arranged between the inner frame clamping strip and the shaft barrel and positioned on an extension line of a movable track of the yarn sash handle;

the end part of the inner frame clamping strip is connected with the guardrail through a locking rubber strip, and the guardrail is connected with the door and window frame or the mullion through the locking rubber strip;

the screen sash handle is L-shaped as a whole, one side of the L-shape is provided with a first handle, the other side of the L-shape is provided with a recess for forming a second handle, and one end of the second handle, which is far away from the first handle, is connected with a screen;

the sash frame and the glass of the door and window sash can be embedded between the door and window frame and the mullion, and one side of the sash frame is provided with a limit strip;

the L-shaped corner of the screen sash handle is provided with a locking strip, a mullion opposite to the screen drum box is provided with a strip-shaped piece with a groove corresponding to the locking strip, and the locking strip can be elastically locked with the strip-shaped piece.

2. The building energy-saving outward casement window with safety guardrail and mosquito-proof function according to claim 1, characterized in that: the locking rubber strip is integrally inverted-splayed, the bottom of the locking rubber strip is closed, the inner sides of the two legs are provided with opposite first surrounding bulges, and the end parts of the two legs far away from the locking rubber strip are respectively provided with a second clamping groove which is concave from outside to inside; the inner frame clamping strip is provided with a receiving groove capable of receiving the locking rubber strip, and the receiving groove is provided with a second surrounding bulge for clamping a second clamping groove; the guardrail is provided with a plug with an expanded end part, and the plug can be clamped in the locking rubber strip by the first enclosure.

3. The building energy-saving outward casement window with safety guardrail and mosquito-proof function according to claim 1, characterized in that: the connecting side of the inner frame clamping strip and the locking rubber strip is connected with the door and window frame through a spring pin.

4. The building energy-saving outward casement window with safety guardrail and mosquito-proof function according to claim 1, characterized in that: the handle head include the slider and insert the fixed pin of second handle, be provided with on the slider with slide rail complex slide rail groove, the one end of slider sets up the third draw-in groove that holds the gauze to set up the pinhole and be used for installing the bolt and fix the gauze in the third draw-in groove.

5. The building energy-saving outward casement window with safety guardrail and mosquito-proof function according to claim 1, characterized in that: the gauze is a stainless steel gauze.

6. The building energy-saving outward casement window with safety guardrail and mosquito-proof function according to claim 1, characterized in that: well club on set up the quadriversal section bar, the left side of quadriversal section bar sets up a pair of block tongue left for be connected with well club, quadriversal section bar upper portion sets up the groove of accomodating that holds the locking adhesive tape, be used for connecting the guardrail, the right side of quadriversal section bar sets up decurrent adhesive tape mounting groove, is used for installing the bread adhesive tape sealed with the door and window fan, the bottom of quadriversal section bar sets up bar mounting groove rightwards for the bar spare of installation trough of belt makes its and fixed pin cooperation, fixed screen window fan handle.

7. The building energy-saving outward casement window with safety guardrail and mosquito-proof function according to claim 6, characterized in that: one of a pair of block tongues of quadriversal section bar is located the upwards extension department of quadriversal section bar, set up the curved separation blade of area arc on the frame of guardrail 3 for when the plug on the frame of guardrail inserts downwards and accomodates the groove, the separation blade covers the edge of well club.

8. The building energy-saving outward casement window with safety barrier and mosquito prevention functions as claimed in claim 7, characterized in that: the section of the strip-shaped part is in a shape that a front E and a back E are opposite and the bottoms of the strip-shaped part are connected, two symmetrical barbs pointing to the opening direction are arranged on the outer side of the strip-shaped part, the strip-shaped part installation groove is U-shaped, and barb grooves matched with the barbs are arranged on the inner sides of two sides of the opening.

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