CN215852097U

CN215852097U - Film sticking device

Info

Publication number: CN215852097U
Application number: CN202121040131.4U
Authority: CN
Inventors: 汪东林; 蒋春林
Original assignee: Shenzhen Qimiaoxingqiu Culture Creativity Co Ltd
Current assignee: Shenzhen Qimiaoxingqiu Culture Creativity Co Ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2022-02-18
Anticipated expiration: 2031-05-14

Abstract

The utility model provides a film sticking device, which solves the complicated film sticking operation steps by arranging a plurality of sliding mechanisms and positioning mechanisms, when in use, electronic equipment is firstly placed into a positioning groove and positioned by the positioning mechanisms, then a protective film is positioned and fixed in a containing groove, an upper cover is installed, an upper cover pull plate is pulled to enable the upper cover pull plate to slide relative to an upper cover main body and then drive the upper cover main body to slide relative to the upper cover, meanwhile, the upper cover pull plate moves to drive a pull tongue layer to tear off a release layer and a dust removal layer, dust on a screen of the electronic equipment is adhered in the dust removal layer tearing process to realize the dust removal function, and a roller is pressed against the protective film and rolls along the protective film to stick the protective layer on the screen surface of the electronic equipment. The film pasting device is simple in structure, convenient to operate and accurate in positioning of the protective film, can realize rapid film pasting operation on electronic equipment, and greatly improves film pasting efficiency and film pasting quality.

Description

Film sticking device

Technical Field

The utility model relates to the technical field of electronic equipment accessories, in particular to a film sticking device with a dust sticking function.

Background

At present, most consumers paste films on mobile phones in a common film pasting mode, the protective films are easy to be pasted askew during film pasting, or a large amount of bubbles, dust and other problems exist in the pasted protective films. Therefore, a film sticking device is invented, but the existing film sticking device has relatively single function, does not have a dust removal function, and has slightly complicated operation steps. When the existing film sticking device is used for sticking a film on a mobile phone, a mobile phone screen needs to be cleaned firstly, then a release layer of a protective film is torn off, and then the protective film is positioned and stuck on the mobile phone screen by using the film sticking device. However, there is a process to tear off the release layer of the protection film and then attach the film, which requires a certain time, and in the process, the surface of the cleaned screen may adsorb some dust in the air again, so that the dust is present between the screen and the protection film after the protection film is attached, which affects the attachment effect of the protection film, and thus the product experience of the user is affected.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a film pasting device having a dust-sticking function and capable of quickly completing a film pasting operation.

The utility model provides a film sticking device, which comprises an upper cover, a lower cover and a protective film,

the protective film packaging device comprises a protective film, a lower cover, an upper cover and a protective film, wherein the lower cover is provided with an accommodating groove, the bottom of the accommodating groove is provided with a positioning groove for accommodating electronic equipment, the rear end of the bottom of the accommodating groove is provided with a positioning column for positioning the protective film, the upper cover is in sliding fit with the accommodating groove, the upper cover comprises an upper cover main body and an upper cover pull plate which can be connected to the upper cover main body in a sliding mode, the upper cover pull plate can slide for a preset distance relative to the upper cover main body and then can drive the upper cover main body to slide relative to the lower cover, and a bulge is arranged on the upper cover pull plate;

the protective film comprises a positioning layer, a protective layer, a release layer, a pull tongue layer and a dust removal layer which are sequentially connected, the rear end of the pull tongue layer is respectively connected with the release layer and the rear end of the dust removal layer, the front end of the pull tongue layer is convexly provided with a rolling part, and the rolling part is provided with a sleeve joint hole matched with the protrusion in a sleeve joint mode.

In an embodiment, first sliding grooves communicated with the front ends are formed in opposite side walls of the accommodating groove, a notch communicated with the top surface of the lower cover is connected to the rear end of the first sliding groove, a roller is arranged at the rear end of the upper cover main body, shaft rods are arranged at two ends of the roller, the shaft rods can slide into the first sliding grooves through the notch and can slide along the first sliding grooves, so that the upper cover can be slidably mounted in the accommodating groove, and when the upper cover main body and the lower cover slide relatively, the roller is abutted to the protective film and can roll along the protective film.

In an embodiment, the film pasting device comprises a plug positioning member, the plug positioning member comprises at least one plug, the plug is used for being connected with a charging interface of the electronic equipment in an inserting mode so as to position the electronic equipment, a clamping groove communicated with the positioning groove is formed in the front end of the positioning groove, and the plug positioning member is clamped in the clamping groove and enables the plug to protrude into the positioning groove.

In an embodiment, the plug positioning element includes a positioning body, and a first plug and a second plug connected to two opposite sides of the positioning body, and the first plug or the second plug is used for being plugged with a charging interface of the electronic device.

In an embodiment, the film pasting device includes a push-pull assembly, the push-pull assembly includes a push plate, an elastic member and a pin, a pin hole is disposed at the rear end of the positioning groove, the push plate is slidably disposed at the rear end region of the positioning groove and used for pushing the electronic device to position the electronic device, the pin is disposed through the pin hole, a rod portion of the pin extends into the positioning groove and is fixedly connected with the push plate, and the elastic member is sleeved on the pin and abuts between the push plate and the rear end wall of the positioning groove.

In one embodiment, the bottom of the rear end of the positioning groove is provided with a socket for the push plate to be inserted into the positioning groove, the position of the opposite side wall of the positioning groove close to the rear end is provided with a derivation groove communicated with the socket, guide rods are arranged at the two ends of the push plate, and the push plate is slidably connected with the push guide groove through the guide rods.

In an embodiment, two sides of the rear end of the upper cover main body are provided with extending edges, the extending edges are provided with shaft holes, shaft levers at two ends of the roller are respectively rotatably connected to the two shaft holes, and the part of the shaft lever penetrating through the shaft holes is in sliding fit with the notch and the first sliding groove.

In an embodiment, the upper cover main body is provided with a second sliding groove, the upper cover pulling plate is provided with a sliding rod, and the sliding rod is in sliding fit with the second sliding groove, so that the upper cover pulling plate can slide relative to the upper cover main body.

In an embodiment, an extending portion is disposed at a rear end of the positioning layer, a positioning hole is disposed on the extending portion, and the positioning hole is in positioning fit with the positioning column so that the protective film is positioned in the accommodating groove.

In one embodiment, a dust removal anti-sticking film is attached to the outside of the dust removal layer; and/or

The upper cover pulling plate is provided with a handle position.

In summary, the utility model provides a film sticking device, which solves the problem of complicated film sticking operation steps by arranging a plurality of sliding mechanisms and positioning mechanisms, when in use, electronic equipment is firstly placed into a positioning groove and positioned by the positioning mechanisms, then a protective film is positioned and fixed in a containing groove, an upper cover is installed, an upper cover pull plate is pulled to enable the upper cover pull plate to slide relative to an upper cover main body, so that the upper cover main body is driven to slide relative to the upper cover, meanwhile, the upper cover pull plate moves to drive a pull tongue layer to tear off a release layer and a dust removal layer, dust on a screen of the electronic equipment is adhered in the dust removal layer tearing process to realize a dust removal function, and a roller presses the protective film and rolls along the protective film to stick the protective layer on the surface of the screen of the electronic equipment. The film pasting device is simple in structure, convenient to operate and accurate in positioning of the protective film, can realize rapid film pasting operation on electronic equipment, and greatly improves film pasting efficiency and film pasting quality.

Drawings

Fig. 1 is a schematic perspective view of a film sticking device according to the present invention.

Fig. 2 is an exploded view of the film sticking device in fig. 1.

Figure 3 is a perspective view of the push-pull assembly mounted to the lower cover.

Fig. 4 is a perspective view illustrating the electronic device and the plug positioning member mounted to the lower cover.

Fig. 5 is a perspective view of the protective film positioned and mounted on the lower cover.

Fig. 6 is a perspective view of the upper cover in an open state after being attached to the lower cover.

Fig. 7 is a perspective view illustrating the upper cover of fig. 6 being folded into the accommodating groove by rotating downward.

Fig. 8 is a perspective view of the film sticking apparatus after the rolling portion is fitted over the protrusion.

Fig. 9 is a perspective view of the film sticking device at the first stage of drawing.

Fig. 10 is a perspective view of the film sticking device in the second stage of drawing.

Fig. 11 is an exploded view of the protective film.

Detailed Description

Before the embodiments are described in detail, it is to be understood that the utility model is not limited in its application to the details of construction and the arrangements of components set forth in the following description or illustrated in the drawings. The utility model is capable of embodiments in other forms of implementation. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," "having," and the like, herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. In particular, when "a certain element" is described, the present invention is not limited to the number of the element being one, and may include a plurality of the elements.

As shown in fig. 1-2, the present invention provides a film attaching apparatus 10 for attaching a film to an electronic device, such as a mobile phone, a tablet computer, etc., in this embodiment, a mobile phone 12 is taken as an example for description.

The film sticking device 10 comprises an upper cover 14, a lower cover 16 and a protective film 18, wherein in the embodiment, the upper cover 14 and the lower cover 16 are both in U-shaped design. Specifically, the upper surface of the lower cover 16 is provided with an accommodating groove 20 penetrating through the front and rear ends, and the upper cover 14 is slidably fitted in the accommodating groove 20. The lower surface of the upper cover 14 is provided with a groove penetrating through the front and rear ends, and when the upper cover 14 is mounted, the upper cover 14 is mounted opposite to the notch of the lower cover 16. The upper cover 14 comprises an upper cover pulling plate 22 and an upper cover main body 24 which are arranged in parallel front and back, the upper cover pulling plate 22 is connected with the upper cover main body 24 in a sliding mode, the upper cover pulling plate 22 can slide for a preset distance relative to the upper cover main body 24, and then the upper cover main body 24 can be driven to slide relative to the lower cover 16, so that the film pasting action can be achieved.

Further, the rear end of the upper cover main body 24 is provided with a rolling structure, so that when the upper cover main body 24 and the lower cover 16 slide relatively, the rolling structure abuts against the protective film 18 and can roll in the length direction of the protective film 18, thereby further optimizing the film quality.

The upper cover 14 is slidably fitted to the receiving groove 20. More specifically, referring to fig. 6 and 7, opposite sidewalls of the receiving groove 20 are respectively provided with a first sliding groove 26 communicating with a front end of the lower cover 16, and a rear end of the first sliding groove 26 is connected to a notch 28 communicating with a top surface of the lower cover 16. The rolling structure includes a roller 30 and a shaft 32 disposed at two ends of the roller 30, wherein the shaft 32 can slide into the first sliding groove 26 through the gap 28 and can slide along the first sliding groove 26, so that the upper lid 14 can be slidably mounted in the accommodating groove 20.

Further, the bottom of the containing groove 20 is provided with a positioning groove 34 for containing the mobile phone 12. Optionally, the positioning groove 34 is provided with an avoiding position corresponding to a protruding element such as a camera and a key of the mobile phone, so that when the mobile phone 12 slides in the positioning groove 34, the protruding element can slide in the avoiding position, and the mobile phone 12 is ensured to be stably placed in the positioning groove 34.

Referring to fig. 4, the film sticking device 10 further includes a plug positioning member 36 for positioning the mobile phone 12. Specifically, the plug positioning element 36 includes at least one plug, and the plug is used for plugging with a charging interface of the mobile phone 12 to fix the mobile phone 12, so that the mobile phone 12 is not shaken after being placed in the positioning groove 34. The front end wall of the positioning slot 34 is provided with a clamping slot 38 communicated with the positioning slot 34, and the plug positioning piece 36 is clamped in the clamping slot 38 and makes the plug protrude into the positioning slot 34.

In the illustrated embodiment, the plug positioning member 36 includes a positioning body 40, and a first plug 42 and a second plug 44 connected to opposite sides of the positioning body 40, and the first plug 42 or the second plug 44 is used for being plugged into a charging interface of the mobile phone 12. The plug positioning element 36 can adjust the installation direction to make the first plug 42 or the second plug 44 protrude into the positioning slot 34, so as to be plugged into the charging interface of the mobile phone 12.

The first plug 42 is, for example, one of a type-c plug, a lighting plug, or a micro-usb plug, and the second plug 44 is one of a type-c plug, a lighting plug, or a micro-usb plug. The first plug 42 and the second plug 44 may be identical or may be arranged differently. The first plug 42 and the second plug 44 are identical, one of which can be used when damaged; when the first plug 42 and the second plug 44 are different, the first plug 42 and the second plug 44 can be respectively plugged with the mobile phones 12 with different charging interfaces, so that the film sticking device 10 can be adapted to different types of mobile phones. In other embodiments, the plug positioning member 36 may be provided with one plug or more than two plugs. In the illustrated embodiment, the first plug 42 is a type-c plug and the second plug 44 is a lighting plug.

Referring to fig. 3, the film sticking device 10 further includes a push-pull component, which can cooperate with the plug positioning component 36 to further enhance the positioning effect on the mobile phone 12, so that it is more stably fixed in the positioning slot 34. Specifically, the push-pull assembly includes a push plate 46, an elastic member 48 and a pin 50, a pin hole 52 is disposed on a rear end wall of the positioning slot 34, the push plate 46 is slidably disposed in a rear end region of the positioning slot 34 and used for pushing against the mobile phone 12 to position the mobile phone, the pin 50 is disposed through the pin hole 52, a rod portion of the pin 50 extends into the positioning slot 34 and is fixedly connected to the push plate 46, the elastic member 48 is, for example, a spring, and the elastic member 48 is sleeved on the rod portion of the pin 50 and abuts between the push plate 46 and the rear end wall of the positioning slot 34 to apply an elastic bias to the push plate 46 to move forward. Meanwhile, when the film is completely attached and the mobile phone 12 needs to be taken out of the positioning groove 34, the push-pull assembly can also play a role of providing an avoidance area, and the avoidance area is left between the mobile phone 12 and the push plate 46 by pushing the push plate 46 backwards, so that a user can conveniently take out the mobile phone 12 by extending hands or other tools into the avoidance area.

Preferably, the bottom of the rear end of the positioning slot 34 is provided with a socket 54 for inserting the push plate 46 into the positioning slot 34, the opposite side wall of the positioning slot 34 is provided with a derivation slot 56 communicating with the socket 54 at a position close to the rear end, both ends of the push plate 46 are provided with guide rods 58, and the push plate 46 is slidably connected to the derivation slot 56 through the guide rods 58, so that the push plate 46 is slidably disposed at the rear end region of the positioning slot 34.

Referring to fig. 5, 8 and 11, a positioning post 60 for positioning the protection film 18 is disposed at the rear end of the bottom of the accommodating groove 34, and the positioning post 60 is located at the rear side of the notch 28 to avoid interference with the installation of the upper cover 14 and the roller 30. The protective film 18 comprises a positioning layer 62, a protective layer 64, a release layer 66, a pull tab layer 68 and a dust removal layer 70 which are sequentially connected from top to bottom, wherein the rear end of the pull tab layer 68 is respectively connected with the rear ends of the release layer 66 and the dust removal layer 70. The top surface of the upper cover pulling plate 22 is provided with a bulge 72, the front end of the pulling tongue layer 68 is convexly provided with a rolling part 74, and the rolling part 74 is provided with a sleeve hole 76 which is in sleeve fit with the bulge 72, so that when the upper cover pulling plate 22 is pulled to move forwards, the pulling tongue layer 68 is driven to move forwards, and the pulling tongue layer 68 moves to drive the release layer 66 and the dust removal layer 70 to roll forwards and inwards to be torn off. The rear end of the positioning layer 62 is provided with an extending portion 78, the extending portion 78 is provided with a positioning hole 80, and the positioning hole 80 is in positioning fit with the positioning column 60 so as to fix the protection film 18 in the accommodating groove 20.

Preferably, a dust removal adhesion preventing film 82 is attached under the dust removal layer 70 to protect the adhesiveness of the lower surface of the dust removal layer 70.

In the illustrated embodiment, the two sides of the rear end of the upper cover main body 24 are respectively provided with an extending edge, the extending edges are provided with shaft holes 84, the shaft rods 32 at the two ends of the roller 30 are respectively rotatably connected to the two shaft holes 84, and the parts of the shaft rods 32 penetrating through the shaft holes 84 are in sliding fit with the notches 28 and the first sliding grooves 26.

The lid pull plate 22 is slidably connected to the lid main body 24. Specifically, referring to fig. 9 and 10, the front end of the lower surface of the upper cover main body 24 is provided with a second sliding slot 86, the rear end of the lower surface of the upper cover pulling plate 22 is provided with a sliding rod 88, and the second sliding slot 86 and the sliding rod 88 are both provided in two and are respectively arranged at intervals along the width direction of the upper cover 14. The slide bar 88 slidably engages the second slide slot 86 such that the lid pull plate 22 is slidable relative to the lid body 24. Preferably, a stop portion is disposed in the second sliding slot 86 to prevent the slide bar 88 from sliding out of the second sliding slot 86, and when the top cover pulling plate 22 slides the predetermined distance relative to the top cover main body 24, the top cover main body 24 is driven to continue to slide forward relative to the bottom cover 16.

Preferably, the upper cover pulling plate 22 is further provided with a handle position 90, so that a user can pull the upper cover pulling plate 22 through the handle position 90, which brings convenience.

The process of laminating using the laminating apparatus 10 of the present invention is described as follows:

please refer to fig. 3 to 10, wherein fig. 3 is a perspective view illustrating the push-pull assembly mounted to the lower cover. The push plate 46 is firstly inserted into the positioning groove 34 from the inserting opening 54 from the bottom to the top, the guide rod 58 slides into the push guide groove 56, the pin 50 is inserted into the pin hole 52 from the back of the lower cover 16, the elastic piece 48 is sleeved on the pin rod part of the pin 50 positioned in the positioning groove 34, and then the tail end of the pin 50 is fixed with the push plate 46, for example, in a threaded manner.

Fig. 4 is a perspective view illustrating the electronic device and the plug positioning member mounted to the lower cover. Firstly, the plug of the plug positioning piece 36 is connected with the charging interface of the mobile phone 12 in an inserting manner, then the mobile phone 12 is operated to enable one end of the mobile phone 12 close to the push plate 46 to push the push plate 46 to move backwards for a certain distance, and further the mobile phone 12 is clamped in the positioning groove 34, and the plug positioning piece 36 is clamped in the clamping groove 38.

Fig. 5 is a perspective view of the protective film positioned and mounted on the lower cover. The dust removal anti-sticking film 82 is firstly torn off, the positioning hole 80 is aligned with the positioning column 60 and sleeved on the positioning column 60, so that the protection film 18 is positioned and fixed in the accommodating groove 34, and the dust removal layer 70 is adhered on the screen of the mobile phone 12.

Fig. 6 is a perspective view of the upper cover in an open state after being attached to the lower cover. Fig. 7 is a perspective view illustrating the upper cover of fig. 6 being folded into the accommodating groove by rotating downward. The roller 30 is first installed at the rear end of the upper cover main body 24, then the upper cover 14 is operated such that the shaft 32 slides into the first sliding groove 26 through the notch 28, and the upper cover 14 is rotated downward such that the upper cover 14 is slidably installed in the accommodating groove 20, while the roller 30 abuts on the protective film 18.

Fig. 8 is a perspective view of the film sticking apparatus after the rolling portion is fitted over the protrusion. The rolling portion 74 is rolled upward so that the engaging hole 76 is engaged and fixed to the protrusion 72.

Fig. 9 is a perspective view of the film sticking device at the first stage of drawing. Fig. 10 is a perspective view of the film sticking device in the second stage of drawing. The upper cover pulling plate 22 is pulled forward through the handle position 90, so that the upper cover pulling plate 22 moves forward relative to the upper cover main body 24 by the preset distance, which is the limit distance that the upper cover pulling plate 22 can move forward relative to the upper cover main body 24 (i.e., the upper cover pulling plate 22 can not move forward relative to the upper cover main body 24). In the process, the pull tab layer 68 is driven to move forward when the upper cover pull plate 22 moves forward, the pull tab layer 68 moves to drive the release layer 66 and the dust removal layer 70 to roll forward to be torn off a part, the dust removal layer 70 sticks dust on a part of the screen of the mobile phone 12 in the tearing process, and meanwhile, the protective layer 64 starts to be stuck on the screen of the mobile phone 12 due to the pressing effect of the roller 30 on the protective film 18. The upper cover pulling plate 22 is continuously pulled forwards through the handle position 90 and drives the upper cover main body 24 to move forwards together, the pulling tongue layer 68 moves to drive the release layer 66 and the dust removal layer 70 to continuously roll forwards and be torn away from the rest part, the dust removal layer 70 sticks dust on the other part of the screen of the mobile phone 12 in the tearing process, the release layer 66 is completely separated from the protective layer 64, the roller 30 starts to roll along the length direction of the positioning layer 62 to press and remove bubbles stuck on the screen of the mobile phone 12 by the protective layer 64, meanwhile, the protective layer 64 is tightly stuck on the screen of the mobile phone 12 until the upper cover 14 is separated from the accommodating groove 20, and the film sticking is completed.

Finally, the positioning layer 62 is torn off, the push plate 46 is pushed backwards to leave the avoidance area, and the user extends the hand or other tool into the avoidance area to take out the mobile phone 12.

The concepts described herein may be embodied in other forms without departing from the spirit or characteristics thereof. The particular embodiments disclosed should be considered illustrative rather than limiting. The scope of the utility model is, therefore, indicated by the appended claims rather than by the foregoing description. Any changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. A film sticking device is characterized by comprising an upper cover, a lower cover and a protective film,

2. The film sticking device according to claim 1, wherein the opposite side walls of the accommodating groove are provided with first sliding grooves communicated with the front ends, the rear end of each first sliding groove is connected with a notch communicated with the top surface of the lower cover, the rear end of the upper cover main body is provided with a roller, two ends of each roller are provided with shaft rods, the shaft rods can slide into the first sliding grooves through the notches and can slide along the first sliding grooves, so that the upper cover can be slidably mounted in the accommodating groove, and when the upper cover main body and the lower cover slide relatively, the rollers abut against the protective film and can roll along the protective film.

3. The film sticking device as recited in claim 2, wherein the film sticking device comprises a plug positioning member, the plug positioning member comprises at least one plug, the plug is used for being plugged with a charging interface of the electronic equipment to position the electronic equipment, a clamping groove communicated with the positioning groove is arranged at the front end of the positioning groove, and the plug positioning member is clamped in the clamping groove and enables the plug to protrude into the positioning groove.

4. The film sticking device as claimed in claim 3, wherein the plug positioning member comprises a positioning body, and a first plug and a second plug connected to opposite sides of the positioning body, and the first plug or the second plug is used for being plugged with a charging interface of the electronic device.

5. The film pasting device as claimed in any one of claims 1 to 4, wherein the film pasting device comprises a push-pull assembly, the push-pull assembly comprises a push plate, an elastic member and a pin, the rear end of the positioning groove is provided with a pin hole, the push plate is slidably arranged at the rear end region of the positioning groove and used for pushing against the electronic equipment to position the electronic equipment, the pin is arranged in the pin hole in a penetrating manner, the rod part of the pin extends into the positioning groove and is fixedly connected with the push plate, and the elastic member is sleeved on the pin and abuts between the push plate and the rear end wall of the positioning groove.

6. The film sticking device as claimed in claim 5, wherein a socket for inserting the push plate into the positioning groove is provided at the bottom of the rear end of the positioning groove, a derivation groove communicated with the socket is provided at a position close to the rear end of the opposite side wall of the positioning groove, guide rods are provided at both ends of the push plate, and the push plate is slidably connected to the push guide grooves through the guide rods.

7. The film sticking device as claimed in any one of claims 2 to 4, wherein the upper cover main body is provided with extending edges at both sides of the rear end thereof, the extending edges are provided with shaft holes, the shaft levers at both ends of the roller are respectively rotatably connected to the two shaft holes, and the parts of the shaft levers penetrating through the shaft holes are in sliding fit with the notches and the first sliding grooves.

8. The film laminating apparatus according to claim 7, wherein the upper cover main body is provided with a second slide groove, and the upper cover pulling plate is provided with a slide bar which is slidably engaged with the second slide groove so that the upper cover pulling plate can slide relative to the upper cover main body.

9. The film sticking device as claimed in claim 8, wherein the rear end of the positioning layer is provided with an extending portion, the extending portion is provided with a positioning hole, and the positioning hole is matched with the positioning column in a positioning manner so as to position the protective film in the accommodating groove.

10. The film sticking device as claimed in claim 9, wherein a dust removal anti-sticking film is stuck outside the dust removal layer; and/or

The upper cover pulling plate is provided with a handle position.