Mouthpiece connection structure

Abstract

The utility model relates to the field of bottle cap discloses the suction nozzle connecting structure, including the straw and setting the support structure and the connecting structure of the straw outer periphery, the connecting structure includes the support portion of fixedly sleeving in the straw outer periphery and sets up the transition connecting portion at the both sides of support portion, the thickness of transition connecting portion gradually reduces from the head portion close to support portion to the end portion far from support portion, is equipped with a plurality of through -hole on transition connecting portion to provide a kind of suction nozzle connecting structure capable of strengthening the sealing connection effect between suction nozzle and bag body.

Description

Technical Field

[0001] This utility model relates to the field of bottle caps, specifically to a nozzle connection structure. Background Technology

[0002] Stand-up pouches are a popular type of flexible packaging bag, commonly used for packaging liquids such as detergents, beverages, and pharmaceuticals. Currently, the most common stand-up pouches on the market have a spout cap at the top or side for easy pouring or sipping, and can be repeatedly closed and opened. When unscrewing the spout cap, one hand is often needed to hold the pouch body or the seal between the pouch and the cap. Conventional caps have a fixing part below them, which is thermoplastically welded to the stand-up pouch using ribs or other methods. For example, Chinese patent document CN213139717U discloses a portable stand-up spout pouch with multiple reinforcing ribs at the connection point for stronger connection to the pouch body. However, these reinforcing ribs are generally thin and not very high, resulting in weak reinforcement and easy tearing. Furthermore, pressure from the contents can easily create gaps between the ribs and the pouch body, compromising the original packaging seal and leading to product leakage. Utility Model Content

[0003] The present invention aims to provide a nozzle connection structure that can enhance the sealing connection between the nozzle and the bag body.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a suction nozzle connection structure, including a straw and a support structure and a connection structure disposed on the outer periphery of the straw. The connection structure includes a support portion fixedly sleeved on the outer periphery of the straw and transition connection portions symmetrically disposed on the left and right sides of the support portion. The thickness of the transition connection portion gradually decreases from the head near the support portion to the end away from the support portion, and the transition connection portion is provided with several through holes.

[0005] The beneficial effects of this plan are:

[0006] The support portion is fixedly fitted around the outer circumference of the straw, providing stable support and preventing deformation during use, thus ensuring the overall stability and durability of the mouthpiece structure. The transition connector is used to connect with the stand-up pouch. The thickness of the transition connector gradually decreases from the head near the support portion to the end away from it. This design facilitates a smooth transition connection with the stand-up pouch opening. If the stand-up pouch were directly connected to the support portion on the cylindrical surface, gaps would easily form at the connection point, resulting in low connection strength and poor stability. Therefore, the transition connector helps improve the connection strength.

[0007] The transition connection has several through holes, which allow the stand-up pouch to be fixed to the edge of the through holes during the welding process. Compared with the rib welding, the connection is smoother. After the stand-up pouch opening is welded to the transition connection, the surface of the stand-up pouch connected to the through hole is slightly sunken. The stand-up pouch material can be fixed to the edge of the through hole, providing more mechanical locking points, thereby improving the strength and tear resistance of the connection. Therefore, the connection strength between the stand-up pouch and the edge of the through hole is greater.

[0008] Preferably, as an improvement, several support strips are provided longitudinally in each through hole.

[0009] The beneficial effects are as follows: the longitudinal support bars form a skeleton structure, which can disperse stress when the transition connection is subjected to external force pulling or torsion, and form a three-dimensional support inside the through hole, effectively preventing the through hole from collapsing and deforming due to pressure during welding heating or long-term use, maintaining the geometric stability of the connection structure, and increasing the structural strength of the transition connection.

[0010] Preferably, as an improvement, the transition connection part is provided with three through holes from top to bottom, and 1-3 support bars are fixed longitudinally in each through hole, with the support bars being set close to the edge of the through hole.

[0011] The beneficial effects are as follows: the support strips are all set close to the edge of the through hole, which can form more contact points with the opening of the stand-up pouch during the thermoplastic welding process. The stand-up pouch material can flow around the support strip and solidify in the molten state, thereby forming a multi-point interlocking connection in the through hole area, which significantly improves the welding strength between the stand-up pouch body and the connecting structure.

[0012] Preferably, as an improvement, the support structure includes multiple support plates sleeved on the outer periphery of the straw, with longitudinal reinforcing plates provided between adjacent support plates.

[0013] The beneficial effects are as follows: By setting up multiple support plates arranged in an array from top to bottom, when the user holds the support part and rotates the cap, multiple points of contact and resistance edges are formed between the user and the support plates, effectively increasing the friction between the operating fingers and the nozzle surface and preventing slippage. Multiple reinforcing plates are set longitudinally between adjacent support plates, which can strengthen the overall support structure in the vertical direction, preventing the nozzle from deforming or breaking when subjected to twisting, squeezing, or transportation impacts.

[0014] Preferably, as an improvement, the lower surface of the bottom support plate is fixedly connected to the upper surface of the connecting structure.

[0015] The beneficial effects are as follows: by directly fixing the bottom support plate to the connecting structure, the support structure and the connecting structure form an integral structure, which improves the overall mechanical strength and assembly stability of the nozzle. When the user screws on the nozzle cap, the torque applied by the hand will be transmitted downward along the support structure to the connecting structure. The bottom support plate is fixedly connected to the connecting structure, which can effectively distribute the torque evenly to the connecting structure body and avoid deformation of the support structure due to excessive local stress.

[0016] Preferably, as an improvement, it also includes a screw cap that is threaded to the straw opening. The outer surface of the screw cap is provided with a plurality of first anti-slip strips that are evenly distributed around the circumference. A plurality of second anti-slip strips are arranged between adjacent first anti-slip strips. The protrusion height of the first anti-slip strips is greater than the protrusion height of the second anti-slip strips.

[0017] The beneficial effects are as follows: Multiple first anti-slip strips are evenly distributed around the outer surface of the cap to form the main anti-slip structure. When the user rotates to open or close the cap, they form a high friction resistance point in contact with the fingers, which greatly improves the efficiency of rotational torque transmission. Several second anti-slip strips are arranged between adjacent first anti-slip strips. The protrusion height of the second anti-slip strips is lower than that of the first anti-slip strips, forming an anti-slip area with alternating heights. This can reduce the stinging or fatigue caused by prolonged pressure on the protruding parts of the fingers while maintaining high friction. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Figure 2 This is a bottom view of the structure of an embodiment of the present invention.

[0020] The reference numerals in the accompanying drawings include: straw 1, support part 2, transition connection part 3, through hole 4, support strip 5, support plate 6, reinforcing plate 7, screw cap 8, first anti-slip strip 9, and second anti-slip strip 10. Detailed Implementation

[0021] The following detailed description is provided through specific implementation methods and examples:

[0022] The preferred embodiments of this utility model are basically as shown in the appendix. Figure 1-2 As shown, Figure 1 and Figure 2 The nozzle connection structure shown includes a straw 1 and a support structure and a connection structure disposed on the outer periphery of the straw 1. The connection structure includes a support part 2 fixedly sleeved on the outer periphery of the straw 1 and transition connection parts 3 symmetrically disposed on the left and right sides of the support part 2. The thickness of the transition connection part 3 gradually decreases from the head near the support part 2 to the end away from the support part 2. The transition connection part 3 is provided with several through holes 4.

[0023] The support portion 2 is fixedly sleeved around the outer periphery of the straw 1, providing stable support for the straw 1 and preventing deformation during use, thus ensuring the stability and durability of the overall spout structure. The transition connection portion 3 is used to connect with the stand-up pouch. The thickness of the transition connection portion 3 gradually decreases from its head near the support portion 2 to its end away from the support portion 2. This design facilitates a smooth transition connection with the stand-up pouch opening. If the stand-up pouch were directly connected to the cylindrical surface of the support portion 2, gaps would easily form at the connection point, resulting in low connection strength and poor stability. Therefore, the transition connection portion 3, connecting to the stand-up pouch opening, helps to improve the connection strength.

[0024] The transition connection part 3 is provided with several through holes 4. During the welding process, the stand-up pouch can be fixed to the edge of the through hole 4. Compared with the rib welding, it is smoother. After the stand-up pouch mouth is welded to the transition connection part 3, the surface of the stand-up pouch connected to the through hole 4 is slightly sunken. The stand-up pouch material can be fixedly connected to the edge of the through hole 4, providing more mechanical locking points, thereby improving the firmness and tear resistance of the connection part. Therefore, the connection strength between the stand-up pouch and the edge of the through hole 4 is greater.

[0025] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention features three through holes 4 from top to bottom in each transition connection 3. One to three support strips 5 are longitudinally fixed within each through hole 4, forming a skeleton structure. This structure disperses stress when the transition connection 3 is subjected to external pulling or torsion, creating a three-dimensional support within the through holes 4. This effectively prevents the through holes 4 from collapsing or deforming due to pressure during welding heating or long-term use, maintaining the geometric stability of the connection structure and increasing the structural strength of the transition connection 3. The support strips 5 are positioned close to the edges of the through holes 3, allowing for more contact points during the thermoplastic welding of the stand-up pouch. The stand-up pouch material, in its molten state, can flow around and solidify around the support strips 5, thus forming a multi-point interlocking connection in the through hole 4 area, significantly improving the welding strength between the stand-up pouch body and the nozzle connection structure. In a further preferred embodiment of this utility model, the transition connection part 3 is provided with a first through hole, a second through hole and a third through hole from top to bottom. The first through hole and the third through hole are provided with two support bars 5, and the second through hole is provided with one support bar 5. The support bars 5 in the first through hole and the third through hole are close to the side of the stand-up pouch, and the support bars 5 in the second through hole are close to the other side of the stand-up pouch, forming an alternating distribution that increases structural strength.

[0026] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention includes a support structure comprising multiple support plates 6 sleeved around the outer periphery of the straw 1. Reinforcing plates 7 are longitudinally arranged between adjacent support plates 6, and each reinforcing plate 7 is welded and fixedly connected to the support plates 6 on both sides. By arranging multiple support plates 6 in a top-to-bottom array, when the user holds the support part 2 and rotates the cap 8, multiple points of contact and resistance edges are formed between the user and the support plates 6, effectively increasing the friction between the user's fingers and the surface of the nozzle, preventing slippage. The longitudinal arrangement of multiple reinforcing plates 7 between adjacent support plates 6 reinforces the overall support structure in the vertical direction, preventing the nozzle from deforming or breaking when subjected to twisting, squeezing, or transportation impacts. The lower surface of the bottom support plate 6 is fixedly connected to the upper surface of the connecting structure. By directly fixing the bottom support plate 6 to the connecting structure, the support structure and the connecting structure form an integral structure, which improves the overall mechanical strength and assembly stability of the nozzle. When the user screws on the nozzle cap 8, the torque applied by the hand will be transmitted downward along the support structure to the connecting structure. The bottom support plate 6 is fixedly connected to the connecting structure, which can effectively distribute the torque evenly to the body of the connecting structure and avoid deformation of the support structure due to excessive local stress.

[0027] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention further includes a screw cap 8 threadedly connected to the straw opening. Multiple first anti-slip strips 9 are evenly distributed around the outer surface of the screw cap 8, and several second anti-slip strips 10 are arranged between adjacent first anti-slip strips 9. The protrusion height of the first anti-slip strips 9 is greater than that of the second anti-slip strips 10. The multiple first anti-slip strips 9 evenly distributed around the outer surface of the screw cap 8 form the main anti-slip structure. When the user rotates to open or close the screw cap 8, they contact the user's fingers, creating a high friction resistance point and significantly improving the efficiency of rotational torque transmission. The arrangement of several second anti-slip strips 10 between adjacent first anti-slip strips 9, with the protrusion height of the second anti-slip strips 10 lower than that of the first anti-slip strips 9, forms an alternating anti-slip area. This maintains high friction while reducing the stinging or fatigue caused by prolonged pressure on the protruding parts on the user's fingers.

[0028] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A suction nozzle connection structure, comprising a straw (1) and a support structure and a connecting structure disposed on the outer periphery of the straw (1), characterized in that: The connecting structure includes a support part (2) fixedly sleeved on the outer periphery of the straw (1) and a transition connecting part (3) symmetrically arranged on the left and right sides of the support part (2). The thickness of the transition connecting part (3) gradually decreases from the head of the support part (2) to the end away from the support part (2). The transition connecting part (3) is provided with several through holes (4).

2. The nozzle connection structure according to claim 1, characterized in that: Several support bars (5) are longitudinally provided in the through hole (4).

3. The nozzle connection structure according to claim 1, characterized in that: The transition connection part (3) is provided with three through holes (4) from top to bottom. 1-3 support bars (5) are fixed longitudinally in each through hole (4). The support bars (5) are all set close to the edge of the through hole (4).

4. The suction nozzle connection structure according to claim 1, characterized in that: The support structure includes multiple support plates (6) sleeved around the periphery of the straw (1), and a reinforcing plate (7) is provided longitudinally between adjacent support plates (6).

5. The nozzle connection structure according to claim 4, characterized in that: The lower surface of the bottom support plate (6) is fixedly connected to the upper surface of the connecting structure.

6. The nozzle connection structure according to claim 1, characterized in that: It also includes a screw cap (8) that is threaded to the straw opening. The outer surface of the screw cap (8) is provided with a plurality of first anti-slip strips (9) that are evenly distributed around the periphery. A plurality of second anti-slip strips (10) are arranged between adjacent first anti-slip strips (9). The protrusion height of the first anti-slip strips (9) is greater than the protrusion height of the second anti-slip strips (10).

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