Flip retaining structure of bottle cap

Abstract

The utility model discloses a flip cover retaining structure of a bottle cap, which comprises a cap body, the cap body is provided with a tearing line and a folding indentation, two ends of the folding indentation are connected with two ends of the tearing line, after the tearing line is broken, the upper side part of the tearing line forms a flip cover, the lower side part of the tearing line forms a bottle cap seat, and the folding indentation part forms a connecting band. When the turnover cover is turned over by more than 180 degrees along the turnover indentation, the portions on the two sides of the connecting belt are stretched to generate inward pulling force, the pulling force enables the contact portion between the turnover cover and the cover base to be extruded to generate elastic deformation of more than 0.5 mm, meanwhile, the middle portion of the connecting belt is arched upwards to generate outward pulling force, and the turnover cover is kept in a turnover state. Due to the fact that the folding indentation is not broken after the turning cover is opened, the folding indentation is not interfered by dislocation of the edges of the turning cover and the cover base in the cover returning process of returning the turning cover to the bottle opening, and the problem of cover returning interference is solved while the turning cover is opened and kept in the state.

Description

Technical Field

[0001] The utility model relates to a packaging container, in particular to a lid for a packaging bottle. Background Art

[0002] There are three structures of hanging lids in the prior art. The first one is to set a circumferential tear line with an opening on the bottle cap. After the bottle cap is opened, the part with the opening of the tear line will not break, forming a connecting band connecting the cap seat and the flip cover. The width of this connecting band is relatively small (usually only 1-2 mm), and the opening angle of the flip cover is generally less than 180 degrees. If it reaches more than 180 degrees, the connecting band is likely to break, which will cause the flip cover to touch the mouth or nose when drinking.

[0003] The second one is to set a circumferential tear line and a short tear line, and a pair (two as a pair) of axial slits are arranged between the tear line and the short tear line. After the tear line and the short tear line break, the part between the slits forms a connecting band. The length of this connecting band is relatively long and can be flipped more than 180 degrees. However, the connecting band has a certain elasticity and remains in the position above 180 degrees. When drinking, one hand is needed to press the flip cover, which is relatively troublesome to use.

[0004] The third one is to set a circumferential tear line and a short tear line, and two pairs (two as a pair) of axial slits are arranged between the tear line and the short tear line. After the tear line and the short tear line break, the part between the slits forms two connecting bands, and there is a certain distance between the two connecting bands. After the flip cover is opened, the contact part between the cap seat and the flip cover between the two connecting bands is squeezed and deformed, and the flip cover can be kept in the position above 180 degrees. However, when the flip cover is covered back to the bottle mouth, under the pulling force of the two connecting bands, the edges of the flip cover and the cap seat will be misaligned and interfere with each other. Coupled with the stopper structure on the flip cover, it is not convenient to cover the flip cover back to the bottle mouth, and the convenience of use is also poor. Content of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a flip cover holding structure for a bottle cap that is convenient for re-covering.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A flip - cover holding structure for a bottle cap, comprising a cap body integrally formed of plastic material. The cap body is provided with an open tear line, and the cap body is further provided with a folding indentation along the circumferential direction. The two ends of the folding indentation are connected to the two ends of the tear line. After the tear line is broken, the upper part of the tear line forms a flip - cover, and the lower part forms a bottle - cap seat. The folding indentation part forms a connecting band connecting the flip - cover and the bottle - cap seat. When the flip - cover is flipped more than 180 degrees along the folding indentation, the parts on both sides of the connecting band are stretched to generate an inward pulling force. This pulling force causes the contact part between the flip - cover and the cap seat to be extruded to produce an elastic deformation of more than 0.5 mm, and at the same time causes the middle part of the connecting band to arch upward to generate an outward tension force, so that the flip - cover remains in the open state.

[0008] A flip - cover holding structure for a bottle cap, comprising a cap body integrally formed of plastic material. The cap body is provided with an open tear line, and the cap body is further provided with a folding indentation along the circumferential direction. Two axial fracture parts are respectively arranged between the two ends of the folding indentation and the two ends of the tear line. After the tear line is broken, the upper part of the tear line forms a flip - cover, and the lower part forms a bottle - cap seat. The part between the two fracture parts forms a bottle - cap band connecting the flip - cover and the bottle - cap seat, and the folding indentation part forms a connecting band connecting the flip - cover and the bottle - cap seat. When the flip - cover is flipped more than 180 degrees, the bottle - cap band is stretched to generate an inward pulling force. This pulling force causes the contact part between the flip - cover and the cap seat to be extruded to produce an elastic deformation of more than 0.5 mm, and at the same time causes the connecting band to arch upward to generate an outward tension force, so that the flip - cover remains in the open state.

[0009] In the bottle caps with the above two structures, a sealing plug is arranged on the inner side of the top of the flip - cover. A downward - protruding guiding part is arranged on one side of the sealing plug close to the folding indentation, and a sealing ring is arranged on the outer surface of the sealing plug.

[0010] Furthermore, the diameter of the flip - cover is smaller than the diameter of the bottle - cap seat, and the folding indentation is a thin - wall part between the bottle - cap seat and the flip - cover.

[0011] The connecting band is composed of a lower band body and an upper band body. The lower end of the lower band body is connected to the bottle - cap seat, the upper end of the upper band body is connected to the flip - cover, and the folding indentation is located at the connection part of the lower band body and the upper band body.

[0012] The thickness of the lower band body gradually decreases from the bottle - cap seat towards the flip - cover.

[0013] The thickness of the upper band body gradually decreases from the flip - cover towards the bottle - cap seat.

[0014] The beneficial effects of the present utility model are as follows: The folding indentation of the present utility model does not break after the flip cover is opened. During the process of closing the flip cover back to the bottle mouth, it will not be interfered by the edge misalignment of the flip cover and the cover seat. While realizing the holding state of the opened flip cover, the problem of interference during closing the cover is also solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0016] Figure 1 is a schematic structural diagram of the first embodiment of the present utility model;

[0017] Figure 2 is Figure 1 a schematic structural diagram showing the flip cover opened more than 180 degrees;

[0018] Figure 3 is a schematic structural diagram of the second embodiment of the present utility model;

[0019] Figure 4 is Figure 3 a schematic structural diagram showing the flip cover opened more than 180 degrees;

[0020] Figure 5 is a cross-sectional view of the present utility model;

[0021] Figure 6 is Figure 5 a schematic structural diagram showing the flip cover opened more than 180 degrees. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The first embodiment refers to Figure 1 、 Figure 2, A flip - lid retaining structure for a bottle cap, comprising a circular cap body 1 integrally injection - molded, vacuum - formed or blow - molded from a plastic material. The cap body 1 is provided with an opening tear line 2, which can be a dotted - line - shaped slit, or continuous or discontinuous indentations, etc. The cap body 1 is also provided with a folding indentation 3 along the circumferential direction. The folding indentation 3 can be one, or two or more arranged in parallel. The two ends of the folding indentation 3 are connected to the two ends of the tear line 2. After the tear line 2 is broken, the upper part of the tear line 2 forms a flip - lid 6, and the lower part forms a bottle - cap seat 7. A connecting band 5 connecting the flip - lid 6 and the bottle - cap seat 7 is formed at the folding indentation 3. When the flip - lid 6 is flipped more than 180 degrees along the folding indentation 3, the parts on both sides of the connecting band 5 are stretched to generate an inward pulling force. This pulling force causes the contact part between the flip - lid 6 and the cap seat 7 to be extruded to produce an elastic deformation of more than 0.5 mm. At the same time, the middle part of the connecting band 5 arches upward to generate an outward tension force, keeping the flip - lid 6 in an open state. The larger the arc length of the folding indentation 3, the greater the deformation generated by the extrusion of the contact part between the flip - lid 6 and the cap seat 7, and the greater the resilience force. The folding indentation does not break after the flip - lid is opened. During the process of covering the flip - lid back to the bottle mouth, there will be no edge misalignment interference between the flip - lid and the cap seat. By reasonably setting the arc length of the folding indentation 3 according to the size of the bottle cap, it is possible to achieve both convenient opening of the bottle cap and flip - lid retention, and convenient re - covering.

[0023] The second embodiment is referred to Figure 3 、 Figure 4, A flip - lid retaining structure for a bottle cap, including a circular cap body 1 integrally injection - molded, vacuum - formed or blow - molded from plastic material. The cap body 1 is provided with an opening tear line 2, which can be a dotted - line - shaped slit or continuous or discontinuous indentations, etc. The cap body 1 is also provided with a folding indentation 3 along the circumferential direction, which can be one or two or more arranged in parallel. Between the two ends of the folding indentation 3 and the two ends of the tear line 2, there are two axial fracture parts 8 respectively. The fracture part 8 can be a through - hole or a non - through cut, etc. After the tear line 2 is broken, the upper part of the tear line 2 forms a flip - lid 6, and the lower part forms a cap seat 7. The part between the two fracture parts 8 forms a cap band 9 connecting the flip - lid 6 and the cap seat 7, and the folding indentation 3 part forms a connecting band 5 connecting the flip - lid 6 and the cap seat 7. When the flip - lid 6 is flipped more than 180 degrees, the cap band 9 is stretched to generate an inward pulling force. This pulling force causes the contact part between the flip - lid 6 and the cap seat 7 to be extruded to produce an elastic deformation of more than 0.5 mm, and at the same time causes the connecting band 5 to arch upward to generate an outward tension force, so that the flip - lid 6 remains in the open state. The smaller the height of the fracture part 8, the greater the generated pulling force. The larger the arc length of the folding indentation 3, the greater the deformation generated by the extrusion of the contact part between the flip - lid 6 and the cap seat 7, and the greater the rebound force. The folding indentation does not break after the flip - lid is opened. During the process of covering the flip - lid back to the bottle mouth, it will not be interfered by the edge misalignment of the flip - lid and the cap seat. By reasonably setting the arc length of the folding indentation 3 and the height of the fracture part 8 according to the size of the bottle cap, it is possible to both conveniently open the bottle cap to achieve flip - lid retention and conveniently cover it back.

[0024] In the above two types of bottle caps, a sealing plug 10 that extends into the bottle mouth after being closed is provided on the inner side of the top of the flip - lid 6. A downward - protruding guiding part 11 is provided at a position on one side of the sealing plug 10 close to the folding indentation 3. During the process of covering back, the guiding part 11 first extends into the bottle mouth, facilitating the complete insertion of the sealing plug 10 into the bottle mouth. A sealing ring 4 is provided on the outer surface of the sealing plug 10, and the contact between the sealing ring 4 and the inner wall of the bottle is closer, which can play a better sealing role.

[0025] In this embodiment, the diameter of the flip - lid 6 can be the same as the diameter of the cap seat 7, and the whole is cylindrical, or the diameter of the flip - lid 6 can be smaller than the diameter of the cap seat 7, and the whole is stepped. The folding indentation 3 is the thin - wall part between the cap seat 7 and the flip - lid 6.

[0026] The folding indentation of the present utility model does not break after the flip - lid is opened. During the process of covering the flip - lid back to the bottle mouth, it will not be interfered by the edge misalignment of the flip - lid and the cap seat. While achieving the open - state retention of the flip - lid, it also solves the problem of interference during covering back.

[0027] The connecting belt 5 is composed of a lower belt body 12 and an upper belt body 13. The lower end of the lower belt body 12 is connected to the bottle cap seat 7, and the upper end of the upper belt body 13 is connected to the flip cover 6. The folding indentation 3 is located at the connection between the lower belt body 12 and the upper belt body 13.

[0028] Referring to Figure 5 , Figure 6 , when an external force flips the flip cover 6 around 180 degrees, under the action of the pulling forces of the two bottle cap belts 9, a force that forcibly crosses appears between the lower belt body 12 and the upper belt body 13. Since the lower belt body 12 and the upper belt body 13 are connected together, the lower belt body 12 and the upper belt body 13 will not cross. Due to forcibly flipping the flip cover 6 backward, the folding angle between the lower belt body 12 and the upper belt body 13 will be greater than 180°. At this time, when the flip cover 6 is released, due to the pulling effect of the bottle cap belt 9, the lower belt body 12 and the upper belt body 13 are maintained in a state where the angle is greater than 180°. When it is necessary to close the flip cover 6, the bottle cap belt 9 is stretched here, and the lower belt body 12 and the upper belt body 13 are refolded to a state where the angle is less than 180°. Since the thickness of the lower belt body 12 gradually decreases from the bottle cap seat 7 towards the flip cover 6, and the thickness of the upper belt body 13 gradually decreases from the flip cover 6 towards the bottle cap seat 7, when the flip cover 6 is opened more than 180°, the lower belt body 12 and the upper belt body 13 are more likely to deform, so that the lower belt body 12 and the upper belt body 13 can be more smoothly refolded to a state where the angle is greater than 180°.

[0029] The above embodiments cannot limit the protection scope of the present invention. Equivalent modifications and variations made by those skilled in the professional technical field without departing from the overall concept of the present invention still fall within the scope covered by the present invention.

Claims

1. A flip cover holding structure for a bottle cap, comprising a cover body (1) integrally formed of a plastic material, wherein the cover body (1) is provided with an opening tear line (2), characterized in that The cover body (1) is further provided with a folding indentation (3) along the circumferential direction, the two ends of the folding indentation (3) being connected to the two ends of the tear line (2). After the tear line (2) is broken, the upper part of the tear line (2) forms a flip cover (6), and the lower part forms a bottle cap seat (7). The folding indentation (3) forms a connecting belt (5) connecting the flip cover (6) and the bottle cap seat (7). When the flip cover (6) is flipped over 180 degrees along the folding indentation (3), the parts on both sides of the connecting belt (5) are stretched to generate an inward pulling force. The pulling force causes the contact part between the flip cover (6) and the cover seat (7) to be squeezed to generate an elastic deformation of more than 0.5 mm, and at the same time causes the middle part of the connecting belt (5) to arch upward to generate an outward tension, so that the flip cover (6) remains in an open state.

2. A flip cover holding structure for a bottle cap, comprising a cover body (1) integrally formed of a plastic material, wherein the cover body (1) is provided with an opening tear line (2), characterized in that The cover body (1) is further provided with a folding indentation (3) along the circumferential direction. Two axial fracture portions (8) are respectively provided between the two ends of the folding indentation (3) and the two ends of the tear line (2). After the tear line (2) is broken, the upper part of the tear line (2) forms the flip cover (6), and the lower part forms the bottle cover seat (7). The area between the two fracture portions (8) forms a bottle cover belt (9) connecting the flip cover (6) and the bottle cover seat (7). The folding indentation (3) area forms a connecting belt (5) connecting the flip cover (6) and the bottle cover seat (7). When the flip cover (6) is flipped over 180 degrees or more, the bottle cover belt (9) is stretched to generate an inward pulling force. The pulling force causes the contact area between the flip cover (6) and the cover seat (7) to be squeezed to generate an elastic deformation of more than 0.5 mm, and at the same time causes the connecting belt (5) to arch upward to generate an outward tension, so that the flip cover (6) remains in an open state.

3. The flip cover holding structure of the bottle cap according to claim 1 or 2, characterized in that A sealing plug (10) is provided on the inner side of the top of the flip cover (6).

4. The flip cover holding structure of the bottle cap according to claim 3, characterized in that A downwardly protruding guide portion (11) is provided on one side of the sealing plug (10) close to the folding indentation (3).

5. The flip cover holding structure of the bottle cap according to claim 3, characterized in that A sealing ring (4) is provided on the outer surface of the sealing plug (10).

6. The flip cover holding structure of the bottle cap according to claim 1 or 2, characterized in that The diameter of the flip cover (6) is smaller than the diameter of the bottle cap seat (7), and the folding indentation (3) is a thin-walled portion between the bottle cap seat (7) and the flip cover (6).

7. The flip cover holding structure of the bottle cap according to claim 1 or 2, characterized in that The connecting belt (5) is composed of a lower belt body (12) and an upper belt body (13); the lower end of the lower belt body (12) is connected to the bottle cap seat (7); the upper end of the upper belt body (13) is connected to the flip cover (6); and the folding indentation (3) is located at the connection between the lower belt body (12) and the upper belt body (13).

8. The flip cover holding structure of the bottle cap according to claim 7, characterized in that The thickness of the lower belt body (12) gradually decreases in the direction from the bottle cap seat (7) toward the flip cover (6).

9. The flip cover holding structure of the bottle cap according to claim 7, characterized in that The thickness of the upper belt (13) gradually decreases in the direction from the flip cover (6) to the bottle cap seat (7).

Images