Three-way connecting piece and vacuum packaging bag

Abstract

The utility model relates to a three-way connecting piece and a vacuum packaging bag, and relates to the field of three-way connecting pieces, the vacuum packaging bag comprises a supporting frame and a sealing bag, the supporting frame comprises a connecting rod and a three-way connecting piece; an air port is formed in the three-way connecting piece, the connecting rod is hollow and is communicated with the interior of the three-way connecting piece, and the connecting rod is inserted into the three-way connecting piece to form a supporting frame; and the sealing bag is covered outside the supporting frame. According to the vacuum packaging bag, the supporting frame is additionally arranged in the vacuum packaging bag, the packaging shape is kept through the supporting function of the supporting frame, products are protected in the supporting frame, the probability of extrusion deformation and damage caused by direct contact between objects and the products in the product storage and transportation process is reduced, and the protection effect on the objects is improved.

Description

Technical Field

[0001] This utility model relates to the field of tee connectors, and in particular to a tee connector and a vacuum packaging bag. Background Technology

[0002] A tee connector is a pipe fitting used in a piping system to connect multiple pipes. In the prior art, assembled frames typically use tee connectors to connect multiple support rods to form a support frame.

[0003] Currently, a Chinese patent with publication number CN 222950631 U and publication date of June 6, 2025, proposes a three-way connector, including a body having three connecting pipes, at least one of the connecting pipes having a snap-fit ​​portion; the snap-fit ​​portion includes a slot formed circumferentially on the connecting pipe, and an elastic snap-fit ​​member can slide circumferentially within the slot of the connecting pipe.

[0004] When in use, the elastic locking parts of the connecting rod of the tee connector have a circumferential angular deviation. At this time, the connecting rod can be rotated to make the elastic locking parts slide in the corresponding slots, so that the two elastic locking parts can be engaged with the corresponding slots of the tee connectors at both ends, thus realizing the assembly of the tee connector and the connecting rod.

[0005] Regarding the aforementioned technologies, when the connecting rod is connected to the connecting pipe of the tee connector, the connecting rod is inserted tightly inside the connecting pipe, so that the outer circumferential surface of the connecting rod and the inner circumferential surface of the connecting pipe are sealed, forming an independent sealed space inside the connecting rod and the connecting pipe. However, when the support frame assembled with this tee connector is used to support the vacuum packaging bag or vacuum environment, the air inside the tee connector and the connecting rod is not easy to be discharged, resulting in a low vacuum degree inside the packaging and easy contamination inside the packaging. Utility Model Content

[0006] In order to better expel air from the tee connector and the support frame when the tee connector is used as part of the support frame in a vacuum environment, this utility model provides a tee connector and a vacuum packaging bag.

[0007] First aspect: This utility model provides a three-way connector, which adopts the following technical solution:

[0008] A three-way connector includes: three connecting pipes, one end of each of the three connecting pipes being fixedly connected to a junction, and the three connecting pipes being internally connected; an air port is provided on the inner side of the junction.

[0009] By adopting the above technical solution, a support frame is formed by splicing a T-joint connector and a connecting rod. A sealed bag is then placed over this support frame, followed by the product inside. Finally, a vacuum is applied to the inside of the sealed bag, effectively vacuum-packing the product within the support frame. During the vacuuming process, air inside the connecting rod is expelled through the vent at the junction, and the bag gradually converges towards the center of the support frame, securing the product in the middle position. Thus, by placing a vent in the center of the T-joint connector, air inside the connector and support frame is expelled during vacuuming, reducing residual air inside the sealed bag and improving its vacuum level.

[0010] Optionally, a chamfer is provided at the inner edge of the connecting pipe.

[0011] After the sealing bag is placed on the support frame formed by the tee connector and the connecting rod, when the connecting rod is inserted into the connecting tube on the tee connector again, the sealing bag will move into the connecting tube as the connecting rod moves, causing the sealing bag to be trapped in the gap between the connecting rod and the connecting tube, which can easily lead to the sealing bag breaking. By adopting the above technical solution, the chamfer set at the inner edge of the connecting tube creates a certain height difference between the outer circumference of the connecting rod and the outer circumference of the connecting tube. When the sealing bag moves with the connecting rod to the insertion position between the connecting rod and the connecting tube, the height difference makes it less likely for the sealing bag to be inserted into the connecting tube, reducing the probability of the sealing bag being trapped between the connecting rod and the connecting tube and breaking.

[0012] Optionally, a reinforcing rib is provided between every two connecting pipes.

[0013] By adopting the above technical solution, the reinforcing ribs are placed between two adjacent connecting pipes to provide support, thereby improving the load-bearing capacity of the tee connector.

[0014] Optionally, the reinforcing ribs, the air vents, and the edges of the connecting pipes are all provided with rounded corners.

[0015] By adopting the above technical solution, the rounded corners allow the sealing bag to transition more smoothly when it is attached to the support frame, thereby reducing the probability of the sealing bag breaking due to contact with sharp edges.

[0016] Optionally, the outer wall of the connecting pipe is provided with a support plane, which is used to increase the support area.

[0017] By adopting the above technical solution, when the support frame composed of tee connectors is placed on the ground, the support plane of the tee connectors supports the ground, increasing the contact area between the support frame and the ground, and effectively improving the stability of the support frame.

[0018] Optionally, the connecting pipe is a round pipe.

[0019] By adopting the above technical solution, since the three-way connector is used to provide support inside the sealed bag, the round tube can provide smooth support and transition inside the sealed bag. When the sealed bag is placed on the frame and vacuumed and shrunk, the bag will smoothly wrap around the outer surface of the round tube and will not be stuck at any sharp corner of the connecting tube. This makes the transition when the packaging bag shrinks and wraps around the support frame more natural and smooth, reducing the risk of the vacuum packaging bag being broken by the sharp corner of the connecting tube or torn by uneven force.

[0020] Optionally, a card interface is provided at the end of the connecting pipe away from the junction.

[0021] By adopting the above technical solution, the card interface forms a plug-in channel with a limiting structure; when the connecting rod is inserted, the limiting structure of the card interface enables rapid positioning and assembly, which solves the problem of unstable assembly of traditional plug-in structures and improves the assembly efficiency and structural reliability of the support frame.

[0022] Secondly, this utility model provides a vacuum packaging bag, which adopts the following technical solution:

[0023] A vacuum packaging bag includes: a support frame and a sealing bag, wherein the support frame includes: a connecting rod and a three-way connector as described in the first aspect; the connecting rod is hollow and is inserted into the connecting tube; the sealing bag covers the outside of the support frame.

[0024] When vacuum-packed products are transported or stored, the product is in direct contact with the outer product through only one layer of packaging bag. Especially during transportation, the product inside the packaging bag is easily squeezed, leading to deformation and affecting product quality. By adopting the above technical solution, during vacuum packaging, the user first inserts the connecting rod into the connecting tube of the T-connector to quickly establish a support frame. Then, the sealing bag is placed over the support frame. During vacuuming, the support frame provides support inside the sealing bag, which gradually adheres to the support frame and the outer surface of the product. Supported by the sealing bag, the product is held upright within the support frame, preventing it from being flattened or deformed, and ensuring packaging space stability. Thus, by adding a support frame inside the vacuum packaging bag, the frame's support helps maintain the packaging shape, reducing compression deformation and damage caused by direct contact between the product and the packaging during storage and transportation, improving packaging reliability and the protective effect on the product.

[0025] Optionally, a spring pin is provided at the end of the connecting rod.

[0026] By adopting the above technical solution, a spring pin is installed at the end of the connecting rod. The spring pin can cooperate with the locking interface on the tee connector to achieve an automatic locking connection. When assembling the support frame, the connecting rod is inserted into the connecting tube. The spring pin is pressed in after touching the inner wall of the connecting tube. After the connecting rod is fully inserted, the spring pin springs out from the locking interface of the connecting tube and locks onto the connecting tube, firmly fixing the connecting rod and the tee connector, reducing the probability of accidental detachment during use. In this way, the spring pin enhances the interlocking force between the connecting rod and the connecting tube, solves the problem of easy loosening at the connection, improves the stability of the support frame, and makes the sealing bag safer and more reliable.

[0027] In summary, this utility model has at least one of the following beneficial technical effects:

[0028] By setting an air vent in the middle of the tee connector, air inside the tee connector and support frame will be discharged through the air vent during vacuuming, reducing the amount of air remaining in the sealed bag and improving the vacuum level of the sealed bag.

[0029] A locking interface is provided on the tee connector, and a spring pin is provided on the connecting rod. When assembling the support frame, after the connecting rod is inserted into the tee connector, the spring pin pops out from the locking interface, forming a limiting structure, which improves the assembly efficiency and structural reliability of the support frame.

[0030] Adding a support frame inside the vacuum packaging bag helps maintain the shape of the packaging, protecting the product inside and reducing the probability of compression deformation and damage caused by direct contact between the product and the packaging during storage and transportation, thus improving the protection of the product. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the vacuum state according to an embodiment of this application;

[0033] Figure 3 This is an exploded view of the structure according to an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the three-way connector structure according to an embodiment of this application;

[0035] Figure 5 This is a schematic diagram of the connecting rod structure according to an embodiment of this application.

[0036] Explanation of reference numerals in the attached drawings: 100, connecting pipe; 101, junction; 103, air port; 104, chamfer; 105, reinforcing rib; 106, supporting plane; 107, snap-fit ​​interface; 200, supporting frame; 210, connecting rod; 211, spring pin; 220, tee connector; 230, sealing bag. Detailed Implementation

[0037] The following combination Figures 1 to 5 The present invention will be described in further detail below.

[0038] This utility model discloses a vacuum packaging bag. (Refer to...) Figures 1 to 3 A vacuum packaging bag mainly includes a support frame 200 and a sealing bag 230. The support frame 200 includes a three-way connector 220, connecting rods 210, and a sealing bag 230. During installation, multiple connecting rods 210 are spliced ​​together through the three-way connector 220 to form a cubic support frame 200. Then, the sealing bag 230 is placed on the support frame 200, and the product is placed inside the support frame 200. Finally, a vacuum is drawn inside the sealing bag 230. During the vacuuming process, the sealing bag 230 gradually adheres to the support frame 200 and the outer surface of the product. Under the support of the sealing bag 230, the product is gradually lifted to the middle position of the support frame 200, so that the support frame 200 can play a supporting role inside the sealing bag 230, reducing the probability of the product being flattened and deformed during placement and transportation.

[0039] Reference Figure 4 The tee connector 220 includes three circular connecting pipes 100, one end of each of the three connecting pipes 100 is fixedly connected to the junction 101, and the interior of each of the three connecting pipes 100 is hollow, so that the interior of the tee connector 220 forms an internally connected channel; an air port 103 is provided on the inner side of the junction 101, and the air port 103 connects the interior space of the tee connector 220 with the outside.

[0040] Reference Figure 4 To increase the support capacity of the tee connector 220, a reinforcing rib 105 is provided between every two connecting pipes 100. The reinforcing rib 105 is a triangular rib structure and is provided between the outer walls of two adjacent connecting pipes 100. The tee connector 220 and the rib are integrally formed and processed.

[0041] Reference Figure 4 In order to increase the stability of the support frame 200 when placed on a flat surface, a support plane 106 is provided on the tee connector 220. Specifically, the support plane 106 is a planar structure formed on the outer wall of the connecting pipe 100. After the support frame 200 is assembled, it contacts the ground or tabletop through the support plane 106, which can increase the stability of the support frame 200.

[0042] Reference Figure 5 The connecting rod 210 is a circular tube with a uniform diameter. During installation, the connecting rod 210 is inserted into the connecting pipe 100 of the tee connector 220, forming a cubic support frame 200. To facilitate quick installation of the connecting rod 210 and the connecting pipe 100, a locking interface 107 is provided at the end of the connecting pipe 100 away from the junction 101. The locking interface 107 is a through hole opened at the end of the connecting pipe 100, corresponding to the connecting rod 210. A spring pin 211 is provided on the top. When the connecting rod 210 is inserted into the connecting pipe 100 of the tee connector 220, the spring pin 211 abuts against the inner wall of the connecting pipe 100 under the pressing action of the chamfer 104 at the end of the connecting pipe 100. At this time, the connecting rod 210 can slide and rotate inside the connecting pipe 100. When the connecting rod 210 moves to the locked position, the spring pin 211 pops out from the locking interface 107 position to lock the connecting rod 210 and the tee connector 220.

[0043] Reference Figure 4 To reduce the probability of the sealing bag 230 being damaged due to the corners of the tee connector 220 pressing and bumping against it after the sealing bag 230 is attached to the tee connector 220, the inner edge of the end of the three connecting pipes 100 away from the junction 101 is chamfered 104, so that the opening of the connecting pipe 100 is concave. The reinforcing rib 105, the edge of the air port 103 and the edge of the connecting pipe 100 are all provided with rounded corner structures.

[0044] The implementation principle of the three-way connector 220 and vacuum packaging bag in this embodiment of the utility model is as follows:

[0045] During installation, firstly, eight T-joints 220 are used to assemble twelve connecting rods 210 to form a cubic support frame 200. Then, a sealing bag 230 is placed on the support frame 200. Next, the product is placed inside the support frame 200. Finally, a vacuum is drawn inside the sealing bag 230. During the vacuuming process, the sealing bag 230 gradually adheres to the support frame 200 and the outer surface of the product. Under the support of the sealing bag 230, the product is gradually lifted to the middle position of the support frame 200, so that the support frame 200 can play a supporting role inside the sealing bag 230, reducing the probability of the product being flattened and deformed during placement and transportation.

[0046] The working principle of the three-way connector 220 is as follows: During the vacuum packaging process, the air port 103 serves as a channel for air to be discharged, allowing the air inside the three-way connector 220 and the connecting rod 210 to be discharged from the sealed bag 230 through the air port 103 at the junction 101, thereby reducing the residual air in the packaging bag and improving the vacuum level.

[0047] In summary, this application incorporates a support frame 200 inside the vacuum packaging bag. The support frame 200 maintains the shape of the packaging, protecting the product inside and reducing the probability of compression deformation and damage caused by direct contact between the product and the item during storage and transportation, thus improving the protection effect. Furthermore, an air vent 103 is provided in the middle of the three-way connector 220 of the support frame 200. When the vacuum packaging bag is vacuumed, the air inside the three-way connector 220 and the support frame 200 will be discharged through the air vent 103, reducing the amount of air remaining in the sealed bag 230 and improving the vacuum level of the sealed bag 230.

[0048] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A tee connector, characterized in that, include: Three connecting pipes (100), one end of each of the three connecting pipes (100) is fixedly connected to the junction (101), and the three connecting pipes (100) are internally connected; An air inlet (103) is provided on the inner side of the intersection (101).

2. A tee connector according to claim 1, characterized in that: The inner edge of the connecting pipe (100) is provided with a chamfer (104).

3. A tee connector according to claim 2, characterized in that: A reinforcing rib (105) is provided between every two of the connecting pipes (100).

4. A tee connector according to claim 3, characterized in that: The edges of the reinforcing rib (105), the air inlet (103), and the connecting pipe (100) are all provided with rounded corners.

5. A tee connector according to claim 3, characterized in that: The outer wall of the connecting pipe (100) is provided with a support plane (106), which is used to increase the support area.

6. A tee connector according to claim 3, characterized in that: The connecting pipe (100) is a round pipe.

7. A tee connector according to claim 3, characterized in that: The end of the connecting pipe (100) away from the junction (101) is provided with a card interface (107).

8. A vacuum packaging bag, characterized in that, include: A support frame (200) and a sealing bag (230), the support frame (200) comprising: a connecting rod (210) and a tee connector as described in any one of claims 1 to 7; The connecting rod (210) is hollow and is inserted into the connecting tube (100); The sealed bag (230) is placed over the outside of the support frame (200).

9. A vacuum packaging bag according to claim 8, characterized in that: A spring pin (211) is provided at the end of the connecting rod (210).

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