Backpack structure

Abstract

The knapsack structure comprises a knapsack body with an opening in one side, a back plate is connected to the side, with the opening, of the knapsack body, straps are arranged on the left side and the right side of the back plate at intervals, a cavity is formed in the back plate, air openings are evenly distributed in the wall face, attached to the human body, of the back plate, and a vacuum compression bag is arranged in the knapsack body. The backpack body is provided with a three-way change-over valve; the three-way change-over valve is provided with a first port, a second port and a third port, the first port is communicated with the air exhaust element, the second port is communicated with the cavity, and the third port is communicated with the vacuum compression bag; and the three-way change-over valve is used for switching the first port to be communicated with the second port or the third port. And during vacuumizing, the air exhaust element is communicated with the vacuum compression bag. When the backpack is carried outdoors, the three-way change-over valve can be communicated with the cavity, air is sucked to drive air circulation between the back plate and the back of a human body, and the heat dissipation effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of backpack technology, and in particular to a backpack structure. Background Technology

[0002] In recent years, with the increasing demand for outdoor sports and daily commuting, the functionality and comfort of backpacks have become key concerns for users. To improve the storage capacity of backpacks, various improvement solutions have emerged in existing technologies, one of which is to incorporate vacuum packing bags inside the backpack. These vacuum packing bags are typically connected to a vacuum element (such as a manual or electric vacuum pump) to compress the air inside the packing bag by creating a vacuum, thereby reducing the volume of stored items and increasing the effective loading space of the backpack.

[0003] However, existing backpacks of this type still have obvious shortcomings in actual use. Especially during long hikes or when carrying the backpack, the part of the backpack that is in contact with the back of the body often accumulates heat due to poor ventilation, making the user feel stuffy and uncomfortable, and even sweating profusely. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a backpack structure with a back panel that provides air circulation and heat dissipation.

[0005] A backpack structure designed for this purpose includes a backpack body with an opening on one side, a back panel connected to the opening side of the backpack body, shoulder straps spaced apart on the left and right sides of the back panel, a cavity inside the back panel, air vents evenly distributed on the wall of the back panel that is in contact with the human body, a vacuum compression bag inside the backpack body, and a three-way conversion valve in the backpack body.

[0006] The three-way switching valve is provided with a first port, a second port and a third port. The first port is connected to the air extraction element, the second port is connected to the cavity, and the third port is connected to the vacuum compression bag.

[0007] The three-way switching valve is used to switch the connection between the first port and the second or third port.

[0008] Preferably, the three-way switching valve includes a valve body and a valve core;

[0009] The valve body is hollow inside, and the first port, the second port and the third port are disposed on the valve body and communicate with the interior of the valve body.

[0010] The valve core is movably disposed inside the valve body, and the valve core is provided with a communicating cavity;

[0011] The communicating cavity is provided with an opening facing the first port so that the first port and the communicating cavity are always in communication.

[0012] The valve core is provided with a communication port, and the valve core can reciprocate between a first position and a second position relative to the valve body; when the valve core is in the first position, the communication port is connected to the second port; when the valve core is in the second position, the communication port is connected to the third port.

[0013] Preferably, the second port and the third port are spaced apart along the same circumference;

[0014] The valve core is rotatably configured relative to the valve body, and the rotation of the valve core relative to the valve body can switch the connection port to the second port or the third port.

[0015] Preferably, the valve core is provided with a locking component that locks with the valve body.

[0016] Preferably, the locking assembly includes a connecting part and a movable knob, the connecting part being fixedly connected to the valve core, and the movable knob being movable relative to the connecting part along the axial direction of the valve core;

[0017] When the movable knob rotates relative to the valve body, it drives the valve core to rotate synchronously;

[0018] The movable knob is provided with a first locking tooth, and the valve body is provided with a second locking tooth. The first locking tooth and the second locking tooth engage to constrain the movable knob to rotate relative to the valve body.

[0019] Preferably, the locking assembly includes an elastic element; the elastic element is used to apply force to the movable knob so that the first locking tooth and the second locking tooth remain engaged.

[0020] Preferably, the movable knob is provided with a keyway, and the connecting part is a key shaft, which is movably inserted into the keyway;

[0021] The movable knob is provided with a countersunk hole, and a bolt is provided in the countersunk hole. The elastic element is sleeved on the bolt; one end of the elastic element abuts against the bolt, and the other end abuts against the movable knob.

[0022] Preferably, the valve core is provided with an annular limiting groove, and the valve body is provided with a limiting screw that is movably inserted into the annular limiting groove.

[0023] Preferably, the valve core is provided with a trajectory limiting groove, and the valve body is provided with a limiting post that is movably inserted into the trajectory limiting groove.

[0024] Preferably, the air extraction element is disposed inside the backpack body, and the backpack body is provided with an air vent that communicates with the interior of the backpack.

[0025] Compared with existing technologies, this invention features a cavity inside the back panel, vents evenly distributed on the surface of the back panel that contacts the body, a vacuum compression bag inside the backpack body, and a three-way valve. The three-way valve controls whether the suction element connects to the cavity or the vacuum compression bag. When vacuuming, the suction element connects to the vacuum compression bag. When worn outdoors, the three-way valve connects to the cavity, drawing air and promoting airflow between the back panel and the user's back, thus facilitating heat dissipation. Attached Figure Description

[0026] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model;

[0027] Figure 2 This is the second three-dimensional structural schematic diagram of the present invention;

[0028] Figure 3 This is one of the cross-sectional structural schematic diagrams of this utility model;

[0029] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0030] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0031] Figure 6 This is the second cross-sectional structural schematic diagram of the present invention;

[0032] Figure 7 This is an exploded view of the three-way switching valve and the air extraction element.

[0033] Figure 8 This is an exploded view of a three-way switching valve.

[0034] Figure 9 This is a cross-sectional schematic diagram of a three-way switching valve. Detailed Implementation

[0035] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0037] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0038] In this document, the term "implementation" means that a specific feature, structure, or characteristic described in connection with an implementation may be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a separate or alternative implementation mutually exclusive with other implementations. It will be explicitly and implicitly understood by those skilled in the art that the implementations described herein can be combined with other implementations.

[0039] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0040] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more (including two groups), and "multiple pieces" refers to two or more (including two pieces).

[0041] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0042] In the description of the embodiments of this application, unless otherwise explicitly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0043] See Figures 1-9 A backpack structure includes a backpack body 10 with an opening on one side, a back panel 20 connected to the opening side of the backpack body 10, shoulder straps 30 spaced apart on the left and right sides of the back panel 20, a cavity 210 inside the back panel 20, and air vents 220 evenly distributed on the wall of the back panel 20 that fits against the body. A vacuum compression bag 110 is disposed inside the backpack body 10, and a three-way switching valve 50 is provided in the backpack body 10. The three-way switching valve 50 is provided with a first port 511, a second port 512, and a third port 513. The first port 511 is connected to a suction element 40, the second port 512 is connected to the cavity 210, and the third port 513 is connected to the vacuum compression bag 110. The three-way switching valve 50 is used to switch the connection between the first port 511 and the second port 512 or the third port 513.

[0044] The vacuum pump 40 is attached to the backpack body 10 in a detachable manner. The backpack body 10 may be equipped with a battery to power the vacuum pump 40.

[0045] Under the action of the three-way switching valve 50, this utility model can switch the connection between the air extraction element 40 and the cavity 210 or the vacuum compression bag 110.

[0046] When the first port 511 and the third port 513 are connected, the pumping element 40 is activated, which can drive the gas in the vacuum compression bag 110 to be discharged to the outside, forming a vacuum. After the vacuum is completed, the three-way switching valve 50 is operated to disconnect the first port 511 and the third port 513.

[0047] When the first port 511 and the second port 512 are connected, the suction element 40 is activated, which draws air between the back panel 20 and the back of the user into the cavity 210, and then outputs it to the outside through the second port 512 and the first port 511. In this embodiment, the heat dissipation method is suction-type heat dissipation and ventilation. Furthermore, in the specific product manufacturing process, a protrusion is provided on the back panel 20, which is used to fit against the back of the user, so that an airflow gap is formed between the back of the user and the back panel.

[0048] See Figure 4 The vacuum compression bag 110 is equipped with a connecting air pipe 120, which is connected to the second port 512.

[0049] See Figures 4 to 8 The three-way switching valve 50 includes a valve body 510 and a valve core 520. The valve body 510 is hollow inside, and a first port 511, a second port 512, and a third port 513 are disposed on the valve body 510 and communicate with the interior of the valve body 510. The valve core 520 is movably disposed inside the valve body 510, and the valve core 520 is provided with a communicating cavity 521. The communicating cavity 521 is opened towards the first port 511 so that the first port 511 and the communicating cavity 521 are always in communication. The valve core 520 is provided with a communicating port 523, and the valve core 520 can reciprocate between a first position and a second position relative to the valve body 510. When the valve core 520 is in the first position, the communicating port 523 communicates with the second port 512. When the valve core 520 is in the second position, the communicating port 523 communicates with the third port 513. In this embodiment, the valve core 520 can be moved between a first position and a second position relative to the valve body 510 by manipulating the valve core 520, thereby switching the connection between the first port 211 and the second port 212 or with the third port 213. The structure is simple and easy to operate.

[0050] See Figure 7 and Figure 8 The second port 512 and the third port 513 are spaced apart along the same circumference. The valve core 520 is rotatable relative to the valve body 510, and this rotation allows the connection port 523 to be connected to either the second port 512 or the third port 513. Specifically, when the valve core 520 rotates relative to the valve body 510, the position of the connection port 532 can be changed, allowing the connection port 523 to connect to either the second port 512 or the third port 513.

[0051] See Figure 4 The valve core 520 is provided with a locking component 60 that locks with the valve body 510. The function of the locking component 60 is to constrain the valve core 520 so that it cannot rotate freely, thereby preventing the position of the communication port 532 from changing arbitrarily.

[0052] See Figure 5 , Figure 7 and Figure 8The locking assembly 60 includes a connecting part 610 and a movable knob 620. The connecting part 610 is fixedly connected to the valve core 520, and the movable knob 620 is movably disposed relative to the connecting part 610 along the axial direction of the valve core 520. When the movable knob 620 rotates relative to the valve body 510, it drives the valve core 520 to rotate synchronously. The movable knob 620 is provided with a first locking tooth 650, and the valve body 510 is provided with a second locking tooth 660. In the locked state, the first locking tooth 650 and the second locking tooth 660 engage to constrain the movable knob 620 from rotating relative to the valve body 510. When unlocking, the movable knob 620 is pulled to move it away from the second locking tooth 660, thereby separating the first locking tooth 650 from the second locking tooth 660. At this time, the valve core 520 can be rotated relative to the valve body 510 by rotating the movable knob 620.

[0053] See Figure 5 The locking assembly 60 includes an elastic element 640; the elastic element 640 applies force to the movable knob 620 to keep the first locking tooth 650 engaged with the second locking tooth 660. When unlocking, pulling the movable knob 620 moves it away from the second locking tooth 660, at which point the elastic element 640 is compressed and stores force. When the user releases the movable knob 620, the elastic element 640 releases the stored force, causing the movable knob 620 to reset.

[0054] See Figure 5 , Figure 7 and Figure 8 The movable knob 620 is provided with a keyway 622, and the connecting part 610 is a key shaft. The connecting part 610 is movably inserted into the keyway 622. The cooperation between the keyway 622 and the key shaft can realize that the movable knob 630 can move relative to the connecting part 610 and the two can rotate synchronously.

[0055] The movable knob 620 is provided with a countersunk hole 621, and a bolt 630 is provided in the countersunk hole 621. The elastic element 640 is sleeved on the bolt 630; one end of the elastic element 640 abuts against the bolt 630, and the other end abuts against the movable knob 620.

[0056] See Figure 5 The valve core 520 is provided with an annular limiting groove 522, and the valve body 510 is provided with a limiting screw 530 that is movably inserted into the annular limiting groove 522. The limiting screw 530 cooperates with the annular limiting groove 522 to constrain the valve core 520 to move along its axial direction and prevent the valve core 520 from separating from the valve body 510.

[0057] See Figure 9The valve core 520 is provided with a trajectory limiting groove 540, and the valve body 510 is provided with a limiting post 550 that is movably inserted into the trajectory limiting groove 540. The cooperation between the trajectory limiting groove 540 and the limiting post 550 can constrain the rotation angle of the valve core 520 relative to the valve body 510, ensuring that the connecting port 523 can be aligned with the second port 512 or the third port 513 when rotating in the forward or reverse direction.

[0058] In this invention, the air extraction element 40 is disposed inside the backpack body 10, and the backpack body 10 is provided with an air vent that communicates with its interior.

[0059] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A backpack structure comprising a backpack body (10) provided with an open side, the open side of the backpack body (10) being connected with a back plate (20), the back plate (20) being provided with a left and right spaced-apart shoulder strap (30), characterized in that: The back plate (20) is internally provided with a cavity (210), the wall surface of the back plate (20) in contact with the human body is uniformly distributed with air outlets (220), the backpack body (10) is internally provided with a vacuum compression bag (110), and the backpack body (10) is provided with a three-way conversion valve (50); The three-way conversion valve (50) is provided with a first port (511), a second port (512) and a third port (513), the first port (511) and the air suction element (40) are in communication with each other, the second port (512) and the cavity (210) are in communication with each other, and the third port (513) and the vacuum compression bag (110) are in communication with each other; The three-way conversion valve (50) is used for switching the communication of the first port (511) with the second port (512) or the third port (513).

2. A backpack structure according to claim 1, wherein: The three-way conversion valve (50) comprises a valve body (510) and a valve core (520); The valve body (510) is hollow inside, the first port (511), the second port (512) and the third port (513) are arranged on the valve body (510) and in communication with the inside of the valve body (510); The valve core (520) is movably arranged in the valve body (510), and the valve core (520) is provided with a communication cavity (521); The communication cavity (521) is open on the side facing the first port (511), so that the first port (511) and the communication cavity (521) always remain in communication; The valve core (520) is provided with a communication port (523), and the valve core (520) can reciprocally move between a first position and a second position relative to the valve body (510); when the valve core (520) is located at the first position, the communication port (523) is in communication with the second port (512); when the valve core (520) is located at the second position, the communication port (523) is in communication with the third port (513).

3. A backpack structure according to claim 2, wherein: The second port (512) and the third port (513) are arranged along the same circumference and are spaced apart; The valve core (520) is rotatably arranged relative to the valve body (510), and the rotation of the valve core (520) relative to the valve body (510) can switch the communication of the communication port (523) with the second port (512) or the third port (513).

4. A backpack structure according to claim 3, wherein: The valve core (520) is provided with a locking assembly (60) which is interlocked with the valve body (510).

5. A backpack structure according to claim 4, wherein: The locking assembly (60) comprises a connecting portion (610) and a moving knob (620), the connecting portion (610) is fixedly connected with the valve core (520), and the moving knob (620) is movably arranged relative to the connecting portion (610) along the axial direction of the valve core (520); When the moving knob (620) rotates relative to the valve body (510), the valve core (520) is driven to rotate synchronously. The mobile knob (620) is provided with first locking teeth (650), the valve body (510) is provided with second locking teeth (660), the first locking teeth (650) and the second locking teeth (660) are engaged to constrain the mobile knob (620) relative to the valve body (510) rotation.

6. A backpack structure according to claim 5, wherein: The locking assembly (60) comprises a resilient element (640); the resilient element (640) is used to apply force to the mobile knob (620), so that the first locking teeth (650) and the second locking teeth (660) are kept engaged.

7. A backpack structure according to claim 6, wherein: The mobile knob (620) is provided with a key groove (622), the connecting part (610) is a key shaft, and the connecting part (610) is movably inserted into the key groove (622). The mobile knob (620) is provided with a sunken platform hole (621), a bolt (630) is arranged in the sunken platform hole (621), and the resilient element (640) is sleeved on the bolt (630); one end of the resilient element (640) abuts against the bolt (630), and the other end abuts against the mobile knob (620).

8. A backpack structure according to claim 2, wherein: The valve core (520) is provided with an annular limiting groove (522), and the valve body (510) is provided with a limiting screw (530) movably inserted into the annular limiting groove (522).

9. A backpack structure according to claim 3, wherein: The valve core (520) is provided with a track limiting groove (540), and the valve body (510) is provided with a limiting column (550) movably inserted into the track limiting groove (540).

10. The backpack structure of claim 1, wherein: The air extraction element (40) is arranged inside the backpack body (10), and the backpack body (10) is provided with a vent hole communicating with the inside.

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