Cover for suction nozzle tube of flexible packaging bag

Abstract

The invention provides a cover for a suction nozzle tube of a flexible packaging bag, the cover comprises an inner cover body, an outer cover body and a clamp ring, the bottom of the inner cover body is provided with a connecting part, the inner wall of the connecting part is provided with threads, the connecting part is in threaded connection with the suction nozzle tube, when the cover body is installed on the suction nozzle tube, the suction nozzle tube is closed, and the cover body is fixed on the suction nozzle tube. The outer cover body is arranged around the inner cover body, the outer cover body and the inner cover body are connected through ribs, the binding ring is connected with the ribs or the inner cover body, the outer diameter of the binding ring is larger than that of the inner cover body, the binding ring is rotationally connected with the suction nozzle pipe, the outer cover body is provided with a plurality of convex parts and concave parts, and the convex parts and the concave parts are arranged on the outer cover body. The convex parts and the concave parts are arranged at intervals, and the plurality of covers are spliced by nesting the convex parts and the concave parts of the adjacent covers. According to the cover, horizontal splicing and vertical stacking can be achieved.

Description

Technical Field

[0001] This application relates to the technical field of soft packaging bags, and particularly to a lid for a nozzle tube of a soft packaging bag. Background Art

[0002] In industries such as food and daily chemicals, soft packaging bags are widely used due to their advantages of being lightweight, low-cost, and easy to carry. As an important part of the soft packaging bag, the nozzle tube lid directly affects the product's sealing performance, usability, and storage and transportation efficiency.

[0003] To prevent the nozzle from being contaminated and food from spilling, the nozzle is attached with a nozzle lid for sealing. Most of the existing nozzle lids are completely separated from the nozzle bag after being opened. Since the nozzle lid has no utilization value, the nozzle lid separated from the nozzle bag is easily discarded casually, which is not only unfavorable for the recycling of the nozzle lid but also causes environmental pollution. Summary of the Invention

[0004] In view of this, an embodiment of this application provides a lid for a nozzle tube of a soft packaging bag to solve at least one problem in the background art. The lid includes an inner lid body, an outer lid body, and a retaining ring. A connecting portion is provided at the bottom of the inner lid body, and a thread is provided on the inner wall of the connecting portion. By threadedly connecting the connecting portion to the nozzle tube, the outer lid body is disposed around the inner lid body, and the outer lid body is connected to the inner lid body through rib strips. The retaining ring is connected to the rib strips or the inner lid body. The outer diameter of the retaining ring is greater than the outer diameter of the inner lid body. The retaining ring is rotatably connected to the nozzle tube. At least one one-way tooth is provided on the inner side wall of the retaining ring, and the orientation of the one-way tooth is the same as the helix direction of the thread provided on the inner wall of the connecting portion.

[0005] A number of protruding portions and recessed portions are provided on the outer lid body, and the protruding portions and the recessed portions are arranged at intervals. The plurality of lids are spliced by nesting the protruding portions with the recessed portions of adjacent lids.

[0006] Further, the protruding portion includes a first boss section and a second boss section. The first boss section is connected to the side of the outer lid body, and the lower surface of the second boss section is connected to the upper surface of the first boss section. A limiting hole matching the second boss section is provided on the surface of the first boss section. The plurality of lid bodies are spliced by nesting the second boss section with the limiting holes of adjacent lid bodies.

[0007] Further, a limiting block is provided on the upper surface of the inner lid body, and a limiting ring is provided at the bottom of the inner lid body. The limiting block is concentric with the inner lid body, and the outer diameter of the limiting block matches the inner diameter of the limiting ring.

[0008] Furthermore, the recessed portion has a limiting structure configured to restrict the protruding portion from separating from the recessed portion of the adjacent cover body.

[0009] Furthermore, the projection of the outer cover body is square, and two protruding portions and the recessed portion are provided on each side wall of the outer cover body, and the protruding portions and the recessed portion on two opposite side walls of the outer cover body are rotationally symmetric.

[0010] Furthermore, the projection of the outer cover body is polygonal, and the protruding portion or the recessed portion is provided on each side wall of the outer cover body.

[0011] Furthermore, the protruding portion includes a first guiding portion and a clamping block, and the recessed portion includes a second guiding portion and a clamping groove.

[0012] Furthermore, a stepped surface is provided between the limiting block and the inner cover body.

[0013] Furthermore, the binding ring includes a first fracture portion, and the two ends of the binding ring are connected through the first fracture portion.

[0014] Furthermore, a second fracture portion is provided on the upper surface of the binding ring, the top end of the second fracture portion is connected to the lower surface of the inner cover body, and the thickness of the second fracture portion gradually decreases from the end of the second fracture portion close to the binding ring to the end of the second fracture portion close to the inner cover body.

[0015] The beneficial effects of the present application are as follows:

[0016] The lid of the present application is provided with a protruding portion and a recessed portion. By nesting the protruding portion with the recessed portion of the adjacent lid, the splicing of the cover body can be realized, and the lids can be combined into various patterns.

[0017] In the present application, the lid is provided with a first boss section and a second boss section. Through the cooperation of the first boss section and the second boss section, the stacking of the cover body can be realized. Combining with the protruding portion and the recessed portion of the lid of the present invention, better storage of the lid can be realized, meeting the needs of users to collect the lids.

[0018] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0019] The drawings described herein are used to provide a further understanding of the present application, form a part of the present application, and the schematic embodiments and descriptions thereof are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0020] Figure 1Schematic structural diagram of the present invention;

[0021] Figure 2 Schematic structural diagram of another perspective of the present invention;

[0022] Figure 3 Schematic diagram of the lids of the present invention stacked vertically;

[0023] Figure 4 Schematic structural diagram of another lid of the present invention;

[0024] Figure 5 Schematic structural diagram of another lid of the present invention;

[0025] Figure 6 Schematic structural diagram of another lid of the present invention;

[0026] Figure 7 Schematic structural diagram of another lid of the present invention;

[0027] Figure 8 Schematic structural diagram of another lid of the present invention;

[0028] Figure 9 Schematic diagram of the lids of the present invention stacked horizontally;

[0029] Reference numerals:

[0030] 1, inner lid body; 2, outer lid body; 3, binding ring; 4, connecting portion; 5, rib; 51, first fracture portion;

[0031] 52, second fracture portion; 6, one-way tooth; 7, convex portion; 71, first boss segment; 72, second boss segment; 73, limiting hole; 74, first guiding portion;; 75, clamping block; 8, recessed portion; 81, second guiding portion; 82, clamping groove; 9, limiting block; 10, limiting ring. Detailed implementation manners

[0032] The exemplary embodiments disclosed in the present application will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the specific embodiments set forth herein. On the contrary, these embodiments are provided so that the present application can be more thoroughly understood and the scope of the present application can be completely conveyed to those skilled in the art.

[0033] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application may be practiced without one or more of these specific details. In other instances, well-known features of some technologies are not described in order to avoid obscuring the present application; that is, not all features of the actual embodiments are described here, and the well-known functions and structures are not described in detail.

[0034] In the drawings, for clarity, the dimensions of layers, regions, elements, and their relative dimensions may be exaggerated. Like reference numerals throughout the drawings denote like elements.

[0035] It should be understood that when an element or layer is referred to as being "on," "adjacent to," "connected to," or "coupled to" another element or layer, it can be directly on, adjacent to, connected to, or coupled to the other element or layer, or intervening elements or layers may be present. In contrast, when an element is referred to as being "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" another element or layer, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, or section from another element, component, region, layer, or section. Thus, a first element, component, region, layer, or section discussed below may be referred to as a second element, component, region, layer, or section without departing from the teachings of the present application. And when discussing a second element, component, region, layer, or section, it does not necessarily imply the existence of a first element, component, region, layer, or section in the present application.

[0036] Spatial relationship terms such as "under," "below," "beneath," "underneath," "above," "over," etc. are used herein for convenience in describing the relationship of one element or feature shown in the figures to another element or feature. It should be understood that, in addition to the orientation shown in the figures, spatial relationship terms are intended to also include different orientations of the device during use and operation. For example, if the device in the figures is flipped, then an element or feature described as "under" or "beneath" or "underneath" another element or feature will be oriented "over" the other element or feature. Thus, the exemplary terms "under" and "beneath" can include both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatial descriptors used herein are to be interpreted accordingly.

[0037] The purpose of the terms used herein is only to describe specific embodiments and is not a limitation of the present application. As used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising" and / or "including", when used in this specification, specify the presence of the stated features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups. As used herein, the term "and / or" includes any and all combinations of the related listed items.

[0038] To thoroughly understand the present application, detailed steps and structures will be presented in the following description to illustrate the technical solutions of the present application. The preferred embodiments of the present application are described in detail below. However, in addition to these detailed descriptions, the present application may have other embodiments.

[0039] As Figure 1 shown, this embodiment provides a lid for a nozzle tube of a soft packaging bag, which includes an inner lid body 1, an outer lid body 2 and a collar 3. A connecting portion 4 is provided at the bottom of the inner lid body. Threads are provided on the inner wall of the connecting portion. By threadedly connecting the connecting portion to the nozzle tube, a sealing ring is provided inside the connecting portion. When the lid body is installed on the nozzle tube, the nozzle tube is closed through the sealing ring. The outer lid body is arranged around the inner lid body, and the outer lid body and the inner lid body are connected by ribs 5. The collar is connected to the ribs or the inner lid body. The outer diameter of the collar is larger than the outer diameter of the inner lid body. The collar is rotatably connected to the nozzle tube. At least one one-way tooth 6 is provided on the inner side wall of the collar. The orientation of the one-way tooth is consistent with the helix direction of the threads provided on the inner wall of the connecting portion. It can be understood that if the one-way tooth is not provided, the collar can rotate within the limiting space provided in the nozzle tube. By providing a stop block within the limiting space, the free rotation of the collar is restricted through the cooperation of the stop block and the one-way tooth, so that when the outer lid body is rotated, the collar can be separated from the inner lid body.

[0040] A number of protruding portions 7 and recessed portions 8 are provided on the outer lid body. The protruding portions and the recessed portions are arranged at intervals. Multiple such lids are spliced by nesting the protruding portions with the recessed portions of adjacent lids.

[0041] As Figure 9As shown, in this embodiment, a plurality of protruding portions and recessed portions are provided on the outer peripheral surface of the outer cover. When the lids need to be joined, the user can insert the protruding portion into any of the recessed portions of the adjacent lid, so that there are multiple connection angles between the two lids. By selecting lids with different shapes, the user can assemble different shapes, thus enhancing the interest in lid joining, further increasing the user's willingness to collect lids, and further avoiding the possibility of the lid being randomly discarded after being separated from the suction nozzle tube, improving the utilization value of the lid. On the other hand, the various assembly forms of the lids will also increase the user's willingness to collect lids, thereby promoting the sales of the products loaded in the flexible packaging bag and enhancing the market competitiveness of the lid.

[0042] As Figure 2 shown, in an alternative embodiment, the protruding portion includes a first boss section 71 and a second boss section 72. The first boss section is connected to the side of the outer cover, the lower surface of the second boss section is connected to the upper surface of the first boss section, a limiting hole 73 matching the second boss section is formed on the surface of the first boss section, and the part of the top end of the first boss section exceeding the upper surface of the outer cover forms an insertion portion. The cross-section of the insertion portion is circular, the height of the insertion portion matches the depth of the limiting hole, and the diameter of the insertion portion matches the inner diameter of the limiting hole. The plurality of lids are joined by nesting the second boss section with the limiting hole of the adjacent lid.

[0043] As Figure 3 shown, in an alternative embodiment, a limiting block 9 is provided on the upper surface of the inner cover, and a limiting ring 10 is provided at the bottom of the inner cover. The limiting block is concentric with the inner cover and the outer diameter of the limiting block matches the inner diameter of the limiting ring. The lids are stacked up and down by inserting the limiting block into the limiting ring.

[0044] In an alternative embodiment, the recessed portion has a limiting structure configured to prevent the protruding portion from disengaging from the recessed portion of the adjacent lid.

[0045] In this embodiment, the limiting structure can be a retaining piece provided at the opening of the recessed portion, or any structure in which the recessed portion restricts the separation of the protruding portion from the recessed portion by providing a bayonet at the opening.

[0046] As Figure 4 shown, in an alternative embodiment, the projection of the outer cover is square, and two protruding portions and the recessed portion are provided on each side wall of the outer cover. The protruding portions and the recessed portions on the two opposite side walls of the outer cover are rotationally symmetric.

[0047] In this embodiment, the protruding portion is L-shaped, a recessed portion is formed between the protruding portion and the side wall of the outer cover body, the depth of the groove matches the length of the protruding portion, and the opening directions of the protruding portions provided on both sides of the outer cover body are opposite.

[0048] As Figure 5 shown, in an alternative embodiment, the projection of the outer cover body is polygonal, and each side wall of the outer cover body is provided with the protruding portion or the recessed portion. It can be understood that the projection of the outer cover body can be triangular, square, pentagonal, hexagonal, etc.

[0049] In another alternative embodiment, the projection of the outer cover body is circular, and the protruding portions and the recessed portions are evenly distributed on the side wall of the outer cover body.

[0050] As Figure 6 shown, in an alternative embodiment, the protruding portion includes a first guiding portion 74 and a clamping block 75, and the recessed portion includes a second guiding portion 81 and a clamping groove 82.

[0051] In this embodiment, both the first guiding portion and the second guiding portion are provided with guiding surfaces, which facilitates inserting the clamping block of the outer cover body into the clamping groove of the adjacent outer cover body by setting the guiding surfaces. The ratio of the first guiding portion to the protruding portion is less than 0.5, and the ratio of the second guiding portion to the recessed portion is less than 0.5.

[0052] In an alternative embodiment, a stepped surface is provided between the limiting block and the inner cover body.

[0053] In this embodiment, when stacking the lids up and down, insert the limiting block of the lid located below into the limiting ring of the lid located above. By setting the stepped surface, the upper surface of the stepped surface abuts against the lower surface of the limiting ring to achieve the limitation of the lid.

[0054] As Figure 7 shown, the binding ring includes a first breaking portion 51, and the two ends of the binding ring are connected through the first breaking portion.

[0055] In this embodiment, a first connecting portion is provided at the bottom of the rib, one end of the first connecting portion is connected to the outer wall of the inner cover body, the other end of the first connecting portion is connected to the inner wall of the binding ring. The binding ring is a C-shaped structure, and the two ends at the notch of the binding ring are connected through the first breaking portion. A tearing opening is provided between one end of the first breaking portion and the binding ring. When rotating the inner cover body, the binding ring remains stationary under the action of the one-way tooth and the limiting block of the suction nozzle tube, and the connection between the first breaking portion and the binding ring breaks, and the ring structure of the binding ring is damaged, so that the limiting mechanism between the binding ring and the suction nozzle tube fails, and the cover body is separated from the suction nozzle tube.

[0056] As Figure 8As shown, in an alternative embodiment, a second fracture portion 52 is provided on the upper surface of the beam ring. The top end of the second fracture portion is connected to the lower surface of the inner cover body. The thickness of the second fracture portion gradually decreases from the end of the second fracture portion close to the beam ring to the end of the second fracture portion close to the inner cover body.

[0057] In this embodiment, there are 3 to 4 second fracture portions which are evenly distributed on the upper surface of the beam ring. The second fracture portion is a part of the beam ring. When the outer cover body is rotated, the beam ring remains stationary under the action of the one-way teeth and the limiting block of the suction nozzle tube, and the connection between the top end of the second fracture portion and the inner cover body breaks, separating the beam ring from the inner cover body. By reducing the contact area between the second fracture portion and the inner cover body, the difficulty of separating the beam ring from the inner cover body is reduced.

[0058] It should be understood that the above embodiments are all exemplary and do not cover all possible implementation manners included in the claims. Without departing from the scope of the present disclosure, various deformations and changes can also be made on the basis of the above embodiments. Similarly, the various technical features of the above embodiments can also be arbitrarily combined to form additional embodiments of the present application that may not be clearly described. Therefore, the above embodiments only represent several implementation manners of the present application and do not limit the protection scope of the patent of the present application.

Claims

1. The lid of the suction nozzle tube for a flexible packaging bag, characterized in that: It includes an inner cover body, an outer cover body and a retaining ring. A connecting portion is provided at the bottom of the inner cover body, and a thread is provided on the inner wall of the connecting portion. By threadedly connecting the connecting portion to the nozzle tube, the outer cover body is arranged around the inner cover body, and the outer cover body and the inner cover body are connected by rib strips. The retaining ring is connected to the rib strips or the inner cover body. The outer diameter of the retaining ring is larger than the outer diameter of the inner cover body. The retaining ring is rotatably connected to the nozzle tube. At least one one-way tooth is provided on the inner side wall of the retaining ring, and the orientation of the one-way tooth is the same as the helix direction of the thread provided on the inner wall of the connecting portion; The outer cover body is provided with a plurality of protrusions and recesses, and the protrusions and the recesses are arranged at intervals. Multiple covers are spliced by nesting the protrusions with the recesses of adjacent covers.

2. The lid of the suction nozzle tube for the flexible packaging bag according to claim 1, characterized in that: The protrusion includes a first boss section and a second boss section. The first boss section is connected to the side of the outer cover body, and the lower surface of the second boss section is connected to the upper surface of the first boss section. A limiting hole matching the second boss section is provided on the surface of the first boss section. Multiple cover bodies are spliced by nesting the second boss section with the limiting holes of adjacent cover bodies.

3. The lid of the suction nozzle tube for a flexible packaging bag according to claim 1, characterized in that: A limiting block is provided on the upper surface of the inner cover body, and a limiting ring is provided at the bottom of the inner cover body. The limiting block is concentric with the inner cover body and the outer diameter of the limiting block matches the inner diameter of the limiting ring.

4. The lid of the suction nozzle tube for the flexible packaging bag according to claim 2 or 3, characterized in that: The recess has a limiting structure configured to prevent the protrusion from separating from the recess of an adjacent cover body.

5. The lid of the suction nozzle tube for a flexible packaging bag according to claim 1, characterized in that: The projection of the outer cover body is square, and two protrusions and the recess are provided on each side wall of the outer cover body. The protrusions and the recess on two opposite side walls of the outer cover body are rotationally symmetric.

6. The lid of the suction nozzle tube for a flexible packaging bag according to claim 1, characterized in that: The projection of the outer cover body is polygonal, and the protrusion or the recess is provided on each side wall of the outer cover body.

7. The lid of the suction nozzle tube for the flexible packaging bag according to claim 1, characterized in that: The protrusion includes a first guiding portion and a clamping block, and the recess includes a second guiding portion and a clamping groove.

8. The lid of the suction nozzle tube for the soft packaging bag according to claim 3, characterized in that: A step surface is provided between the limiting block and the inner cover body.

9. The lid of the suction nozzle tube for the flexible packaging bag according to claim 1, characterized in that: The retaining ring includes a first breaking portion, and the two ends of the retaining ring are connected through the first breaking portion.

10. The lid of the suction nozzle tube for a flexible packaging bag according to claim 1, characterized in that: A second breaking portion is provided on the upper surface of the retaining ring. The top end of the second breaking portion is connected to the lower surface of the inner cover body, and the thickness of the second breaking portion gradually decreases from the end of the second breaking portion close to the retaining ring to the end of the second breaking portion close to the inner cover body.

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