CN110803331B

CN110803331B - Negative pressure suction tube for assisting film pasting

Info

Publication number: CN110803331B
Application number: CN201911262076.0A
Authority: CN
Inventors: 尹新华
Original assignee: Jiangxi Hualianxin Technology Co ltd
Current assignee: Jiangxi Hualianxin Technology Co ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2021-09-14
Anticipated expiration: 2039-12-10
Also published as: CN110803331A

Abstract

The invention discloses a negative pressure suction tube for auxiliary film pasting, which aims to provide a negative pressure suction tube for auxiliary film pasting, which can effectively remove bubbles between a protective film and a screen, has low cost and is convenient to use. The lower terminal surface of barrel can also further set up first rubber ring and second rubber ring thereby promote the leakproofness between cavity and the cell-phone screen. The method is simple to operate, can effectively remove bubbles under the protective film, and has better practicability.

Description

Negative pressure suction tube for assisting film pasting

Technical Field

The invention relates to the technical field of negative pressure suction cylinders, in particular to a negative pressure suction cylinder for assisting in film pasting.

Background

As the screen of a mobile phone, a tablet or a computer is enlarged, many users stick a protective film on the screen to prevent abrasion for the purpose of protecting the screen. At present, most of common protective films are films made of PP materials or PVC materials and are attached to a screen through glue.

However, in the film attaching process, air bubbles often remain between the screen and the protective film. If the bubble is located at the edge of the screen, it is possible to discharge by simple squeezing, but if the bubble is located at the center of the screen, it is difficult to discharge by simple squeezing. Some repair shops are equipped with special vacuum bubble removing machines, but the equipment cost is high, and ordinary users obviously cannot be equipped with the equipment. Therefore, there is a need for a device that can not only meet the requirements of common users for convenient use and low cost, but also effectively remove air bubbles between the screen and the protective film.

Disclosure of Invention

The invention aims to provide equipment which can effectively remove bubbles between a protective film and a screen and can meet the requirements of common users on convenience in use and low cost.

The technical solution of the invention is as follows: the negative pressure suction tube comprises a tube body and a piston rod, wherein a cavity is formed in the tube body and communicated to the lower end face of the tube body, a screw hole is formed in the upper end face of the tube body and communicated to the cavity, the upper portion of the piston rod is a screw rod, the lower portion of the piston rod is a piston body, the screw rod is matched with the screw hole, and the piston body is matched with the cavity.

The basic principle of the invention is as follows: the piston rod is rotated to enable the piston body to be located at the lower end of the cavity, then the cavity is covered on the bubbles of the screen, and the lower end face of the cylinder body is enabled to be abutted against the screen. And then the piston rod is screwed out upwards, a negative pressure environment is formed in the lower half area of the cavity, and the bubbles on the screen generate an upward thrust on the protective film (namely, the bubbles are attracted by the cavity). The cylinder is now moved towards the edge of the screen and the bubbles can be effectively squeezed out due to the suction of the cavity and the squeezing action of the cylinder. According to the technical scheme, bubbles between the screen and the film can be effectively removed, the steps are simple, and the requirements of common users on convenience in use and low cost can be completely met.

Preferably, the cross-section of the cavity and the piston body is circular. For any point on the screen, the contact area of the circular cavity and the point is gradually changed, so that the bubble at the point is more favorably attracted.

Preferably, the diameter of the cavity is 10mm to 16 mm. The diameter of the bubbles between the protective film and the screen is mostly smaller than 16mm under normal conditions, and the bubbles generally exceeding 15mm can be directly extruded by hands, so that the diameter of the cavity of the scheme mainly aims at the bubbles which are difficult to be directly extruded by hands and have the diameter smaller than 16 mm.

Preferably, the lower end face of the cylinder body is provided with a first rubber ring, and the first rubber ring surrounds the cavity. The setting of first rubber ring then has further promoted the leakproofness between cavity and screen, and first rubber ring can push the bubble better.

Preferably, the lower terminal surface of barrel still is equipped with the second rubber ring, the second rubber ring centers on first rubber ring sets up, leave the space between second rubber ring and the first rubber ring, the thickness of second rubber ring is less than first rubber ring. By filling proper lubricating oil in the gap, on one hand, the sealing performance between the cavity and the screen is further improved, and on the other hand, the negative pressure suction tube is smoother when sliding on the screen. The thickness of second rubber ring is less than first rubber ring, has also avoided the influence of second rubber ring to first rubber ring leakproofness.

Preferably, the left side wall and the right side wall of the barrel are provided with symmetrical pushing plates, and an included angle between each pushing plate and the horizontal plane is 30-45 degrees, so that a user can push the pushing plates conveniently on one hand, and the barrel is pushed downwards and forwards on the other hand.

Preferably, the top end of the piston rod is further provided with a knob, the knob is located above the cylinder, and the middle of the side surface of the piston body is provided with an annular groove, so that a user can rotate the piston rod more conveniently.

Drawings

FIG. 1 is a schematic view of a negative pressure suction tube for auxiliary film application according to the present invention;

FIG. 2 is a schematic side view (dotted line represents perspective) of a vacuum suction tube for auxiliary film application according to the present invention;

FIG. 3 is a schematic bottom view of a vacuum suction tube for auxiliary film application according to the present invention;

FIG. 4 is a schematic view of a piston rod of a vacuum suction tube for auxiliary film application according to the present invention;

in the drawings: 1-a cylinder body; 101-a cavity; 102-screw holes; 103-a first rubber ring; 104-a second rubber ring; 2-a piston rod; 201-screw rod; 202-a piston body; 203-knob; 204-groove; 3-pushing the board.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

Example 1

As shown in fig. 1, fig. 2 and fig. 3, in the negative pressure suction tube for auxiliary film pasting according to the present invention, the tube body 1 is a rectangular parallelepiped, and a cylindrical cavity 101 is provided inside the tube body 1. The diameter of the cavity 101 is 14mm, and the cavity 101 penetrates to the lower end face of the cylinder 1. The center of the upper end face of the cylinder 1 is provided with a screw hole 102, and the screw hole 102 is communicated with the cavity 101. The lower end surface of the cylinder 1 is provided with a first rubber ring 103 and a second rubber ring 104. The diameter of the first rubber ring 103 is 14mm, the thickness is 2mm, and the first rubber ring 103 is arranged around the cavity 101; the second rubber ring 104 has a diameter of 17mm and a thickness of 1.6mm, and the second rubber ring 104 is disposed around the first rubber ring 103. A gap of 1.4mm is reserved between the second rubber ring 104 and the first rubber ring 103. First rubber ring 103 and second rubber ring 104 all contradict with the screen, and wherein first rubber ring 103 can further promote the leakproofness between the lower terminal surface of barrel 1 and the screen, and the space between first rubber ring 103 and the second rubber ring 104 can be used for filling lubricating oil for barrel 1 is more smooth-going when the screen surface slides. Since the thickness of the second rubber ring 104 is smaller than that of the first rubber ring 103, the second rubber ring 104 does not affect the sealing performance of the first rubber ring 103.

As shown in fig. 4, the piston rod 2 has a cylindrical piston body 202 with a screw 201 at its upper end, the screw 201 having the same diameter as the screw hole 102, and the piston body 202 having the same diameter as the cavity 101. Piston rod 2 and cylinder 1 can be movably connected by inserting piston body 202 into cavity 101 and matching screw 201 with screw hole 102.

The left side wall and the right side wall of the barrel body 1 are both provided with pushing plates 3 which are symmetrically arranged, and the included angle between each pushing plate 3 and the horizontal plane is 30 degrees. The user can conveniently push the cylinder 1 through the push plate 3, and the cylinder 1 can be simultaneously pushed downwards and forwards, so that the movement on the screen is more stable.

The application method of the scheme comprises the following steps: the piston rod 2 is first rotated so that the piston body 202 is located in the lower half of the cavity 101 while a suitable lubricating oil is applied in the space of the lower end surface of the cylinder 1. The cavity 101 is then covered over the bubbles of the screen and the lower end face of the cylinder 1 is brought into abutment with the screen. The piston rod 2 is then screwed out upwards, the lower half of the cavity 101 forming a negative pressure environment. Because the pressure of the air bubbles below the protective film is greater than the pressure of the air above the protective film, the protective film receives upward thrust, and the adhesion between the protective film and the screen near the air bubbles is loosened. At this time, the cylinder 1 is pushed toward the edge of the screen by the pushing plate 3, and the air bubbles can be effectively pushed out due to the suction action of the cavity 101 and the pressing action of the first rubber ring 103.

Example 2

According to the negative pressure suction tube for assisting in film pasting, disclosed by the invention, the tube body 1 is a cuboid, and a cylindrical cavity 101 is arranged in the tube body 1. The diameter of the cavity 101 is 18mm, and the cavity 101 penetrates to the lower end face of the cylinder 1. The center of the upper end face of the cylinder 1 is provided with a screw hole 102, and the screw hole 102 is communicated with the cavity 101. The lower part of the cylinder 1 is made of rubber, so that when the cylinder 1 is abutted against the screen, the sealing performance of the cavity 101 is better. The left side wall and the right side wall of the barrel body 1 are both provided with pushing plates 3 which are symmetrically arranged, and the included angle between each pushing plate 3 and the horizontal plane is 30 degrees.

The piston rod 2 has a cylindrical piston body 202 with a screw 201 at the upper end, the screw 201 has the same diameter as the screw hole 102, and the piston body 202 has the same diameter as the cavity 101. Piston rod 2 and cylinder 1 can be movably connected by inserting piston body 202 into cavity 101 and matching screw 201 with screw hole 102.

The top end of the piston rod 2 is also provided with a knob 203, and the side surface of the piston body 202 is provided with an annular groove 204. The knob 203 can facilitate the ordinary user to rotate the piston rod 2, and the groove 204 can reduce the contact area between the piston body 202 and the cavity 101 on the premise of ensuring the sealing fit of the piston body 202 and the cavity 101, thereby enabling the ordinary user to rotate the piston rod 2 more easily.

The above is the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that any improvements and modifications to the present invention without departing from the principles of the present invention should also be considered within the scope of the present invention by those skilled in the art.

Claims

1. The negative pressure suction tube for assisting in film pasting is characterized by comprising a tube body (1) and a piston rod (2), wherein a cavity (101) is arranged in the tube body (1), the cavity (101) is communicated with the lower end face of the tube body (1), a screw hole (102) is formed in the upper end face of the tube body (1), the screw hole (102) is communicated with the cavity (101), the upper portion of the piston rod (2) is provided with a screw rod (201), the lower portion of the piston rod is provided with a piston body (202), the screw rod (201) is matched with the screw hole (102), the piston body (202) is matched with the cavity (101), the lower end face of the tube body (1) is provided with a first rubber ring (103) and a second rubber ring (104), the first rubber ring (103) is arranged around the cavity (101), the second rubber ring (104) is arranged around the first rubber ring (103), and a gap is reserved between the second rubber ring (104) and the first rubber ring (103), lubricating oil is filled between the first rubber ring (103) and the second rubber ring (104), and the thickness of the second rubber ring (104) is smaller than that of the first rubber ring (103) so that the gap between the second rubber ring (104) and the screen is larger than that between the first rubber ring (103) and the screen.

2. The negative pressure suction cylinder with auxiliary film as claimed in claim 1, wherein the cross section of the cavity (101) and the cross section of the piston body (202) are both circular.

3. The negative pressure suction tube for auxiliary film pasting according to claim 2, characterized in that the diameter of the cavity (101) is 10 mm-16 mm.

4. The negative pressure suction tube for auxiliary film pasting according to any one of claims 1 to 3, wherein symmetrical pushing plates (3) are arranged on the left side wall and the right side wall of the tube body (1), and the included angle between the pushing plates (3) and the horizontal plane is 30-45 degrees.

5. The negative pressure suction tube of the auxiliary film as claimed in any one of claims 1 to 3, wherein the top end of the piston rod (2) is further provided with a knob (203), the knob (203) is located above the tube body (1), and the middle of the side surface of the piston body (202) is provided with an annular groove (204).