Backpack with adjustable back gap

Abstract

The embodiment of the utility model discloses a knapsack with an adjustable back clearance, which comprises a knapsack body, a first pull rope and a second pull rope which can be movably pulled out are arranged on the knapsack body, a support plate is slidably mounted at the lower part of the back of the knapsack body, and a threaded rod is fixedly connected to the middle of one side of the support plate; a rope wheel is rotatably mounted in the backpack body, the rope wheel is mounted on the threaded rod in a threaded mode, one end of a first pull rope and one end of a second pull rope are wound and fixed to the rope wheel, and when the first pull rope is pulled, the rope wheel can be driven to rotate in the forward direction; when the second pull rope is pulled, the rope wheel can be driven to rotate reversely; the distance between the supporting plate and the backpack body can be adjusted through rotation of the rope wheel. The backpack with the adjustable back gap is adopted; the distance between the supporting plate and the knapsack body can be adjusted through the first pull rope and the second pull rope, the supporting plate is supported on the back of a user, equivalently, the distance between the back and the knapsack body is adjusted, and operation is convenient and flexible.

Description

Technical Field

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

[0002] A backpack is a general term for any backpack worn on both shoulders. Depending on their purpose, backpacks are further categorized into laptop backpacks, sports backpacks, fashion backpacks, school backpacks, military backpacks, hiking backpacks, and so on. Because backpacks are worn close to the user's back, prolonged use can easily lead to sweating; however, in cold weather, the close contact between the backpack and the user's back can also provide some warmth.

[0003] In regions with significant temperature differences between day and night, such as southern Xinjiang, northern Tibet, western Gansu, Qinghai, and Ningxia in my country, and even during mountain climbing trips where the temperature difference between the base and summit is substantial, frequent adjustments to the backpack's back support are necessary. Current backpacks typically adjust this gap using shoulder straps and a waist belt, which is cumbersome and inconvenient. Therefore, we propose a backpack with an adjustable back support gap. Utility Model Content

[0004] In view of this, the present invention provides a backpack with an adjustable back gap to solve the problem of inconvenient adjustment of the gap between the backpack and the user's back in the prior art.

[0005] A backpack with adjustable back clearance includes a backpack body, on which a first pull cord and a second pull cord are movably pulled out. A support plate is slidably mounted on the lower back of the backpack body, and a threaded rod is fixedly connected to the middle of one side of the support plate. A rope wheel is rotatably mounted inside the backpack body, and the rope wheel is threaded onto the threaded rod. One end of the first pull cord and one end of the second pull cord are respectively wound and fixed to the rope wheel. When the first pull cord is pulled, it can drive the rope wheel to rotate in the forward direction; when the second pull cord is pulled, it can drive the rope wheel to rotate in the reverse direction. The rotation of the rope wheel can adjust the distance between the support plate and the backpack body.

[0006] Preferably, the support plate described above is slidably installed on the back of the backpack body in the vertical direction.

[0007] Preferably, a fixing block is fixedly installed in the lower inner part of the backpack body, and sliding holes are provided on both ends of the fixing block. Sliding rods are fixedly connected to both ends of the side of the support plate, and one end of the sliding rod passes through the backpack body and is slidably installed in the sliding hole.

[0008] Preferably, the aforementioned fixing block has a limiting groove, and the lower part of the rope wheel is locked in the limiting groove.

[0009] Preferably, the above-mentioned rope pulley has a threaded hole in the middle, which can be threaded with the threaded rod. One end of the threaded rod has an insertion hole, in which an iron bar is inserted. The iron bar can prevent the rope pulley from rotating excessively and disengaging from the threaded rod.

[0010] Preferably, the two shoulder straps of the backpack body described above are respectively provided with through holes that can communicate with the inside of the backpack body. One end of the first pull rope and one end of the second pull rope are respectively inserted into the backpack body through the through holes of the two shoulder straps and fixedly connected to the rope wheel.

[0011] Preferably, the other end of the first pull rope and the other end of the second pull rope are respectively fixedly connected to a pull ball, and the diameter of the pull ball is larger than the diameter of the through hole.

[0012] Preferably, the aforementioned pulley is configured with an I-shaped structure.

[0013] Preferably, a guide block is fixedly connected inside the backpack body, and a through guide hole is provided on the guide block, through which the first pull rope and the second pull rope pass respectively.

[0014] Implementing the embodiments of this utility model will have the following beneficial effects:

[0015] After adopting the aforementioned backpack with adjustable backrest clearance;

[0016] The distance between the support plate and the backpack body can be adjusted by using the first and second pull ropes. When in use, the support plate supports the user's back, which is equivalent to adjusting the distance between the back and the backpack body, and the operation is very convenient.

[0017] During adjustment, it can be stopped at any position as needed, which is very flexible. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] in:

[0020] Figure 1 This is a schematic diagram of the structure of a backpack with adjustable backrest clearance in one embodiment;

[0021] Figure 2 This is a schematic diagram of the disassembled structure of the support plate and the fixing block in one embodiment;

[0022] Figure 3 This is a schematic diagram of the structure of the guide block in one embodiment.

[0023] Reference numerals: 100, Backpack body; 200, Support plate; 201, Pad; 202, Threaded rod; 203, Sliding rod; 204, Insertion hole; 205, Iron bar; 300, Shoulder strap; 301, Through hole; 400, First pull rope; 500, Second pull rope; 501, Pull ball; 600, Fixing block; 601, Sliding hole; 602, Restriction groove; 603, Rope pulley; 604, Threaded hole; 700, Guide block; 701, Guide hole. Detailed Implementation

[0024] 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 in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application, are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0027] Example 1

[0028] Please see Figure 1-3A backpack with adjustable back clearance includes a backpack body 100. The backpack body 100 has a first pull cord 400 and a second pull cord 500 that can be pulled out. A support plate 200 is slidably mounted on the lower back of the backpack body 100, and a threaded rod 202 is fixedly connected to the middle of one side of the support plate 200. A pulley 603 is rotatably mounted inside the backpack body 100, and the pulley 603 is threaded onto the threaded rod 202. One end of the first pull cord 400 and one end of the second pull cord 500 are respectively wound and fixed to the pulley 603. When the first pull cord 400 is pulled, it drives the pulley 603 to rotate forward; when the second pull cord 500 is pulled, it drives the pulley 603 to rotate in the opposite direction. The rotation of the pulley 603 can adjust the distance between the support plate 200 and the backpack body 100. For example, in a specific implementation, when the first pull cord 400 is pulled, it drives the pulley 603 to rotate forward, at which time the backpack body 100 is closer to the user's back; conversely, when it is pulled away, it is further away. During use, a soft pad 201 (such as a rubber pad) is fixedly connected to one side of the support plate 200. The size, style and structure of the pad can be flexibly set as needed to improve the user's comfort.

[0029] In use, the support plate 200 is slidably mounted on the back of the backpack body 100 in a vertical direction. More specifically, a fixing block 600 is fixedly mounted on the lower inner part of the backpack body 100. Sliding holes 601 are formed at both ends of the fixing block 600. Sliding rods 203 are fixedly connected to both ends of the side of the support plate 200. One end of the sliding rod 203 passes through the backpack body 100 and is slidably mounted within the sliding hole 601. The sliding rod 203 and the sliding hole 601 are in a sliding fit with a clearance, and the sliding of the support plate 200 can adjust the distance between the support plate 200 and the backpack body 100.

[0030] The fixed block 600 has a limiting groove 602, and the lower part of the rope wheel 603 is locked in the limiting groove 602. The rope wheel 603 can rotate within the limiting groove 602, while the limiting groove 602 restricts the translation of the rope wheel 603.

[0031] like Figure 3 In the middle of the rope pulley 603, a threaded hole 604 is provided, which can be threaded with the threaded rod 202. One end of the threaded rod 202 is provided with an insertion hole 204, and an iron bar 205 is inserted into the insertion hole 204. The iron bar 205 can prevent the rope pulley 603 from rotating excessively and disengaging from the threaded rod 202.

[0032] like Figure 1 In the backpack body 100, each of the two shoulder straps 300 (the shoulder straps 300 are hollow fabric covers) is provided with a through hole 301 that can communicate with the inside of the backpack body 100. One end of the first pull rope 400 and one end of the second pull rope 500 are respectively inserted into the backpack body 100 through the through hole 301 of the two shoulder straps 300 and fixedly connected to the rope wheel 603.

[0033] In addition, the other ends of the first pull rope 400 and the second pull rope 500 are respectively fixedly connected to a pull ball 501, the diameter of which is larger than the diameter of the through hole 301.

[0034] Specifically, the pulley 603 is designed with an I-shaped structure. The I-shaped structure prevents the first pull rope 400 and the second pull rope 500 from slipping off. In implementation, a partition is fixedly sleeved in the middle of the pulley 603. The partition can separate the first pull rope 400 and the second pull rope 500, preventing the first pull rope 400 and the second pull rope 500 from getting tangled.

[0035] Meanwhile, a guide block 700 is fixedly connected inside the backpack body 100. The guide block 700 has a through guide hole 701, through which the first pull rope 400 and the second pull rope 500 pass. The guide block 700 and the guide hole 701 are used to guide the pull ropes (first pull rope 400 and second pull rope 500), on the one hand to avoid tangling, and on the other hand to stabilize the pull ropes and prevent them from becoming messy.

[0036] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A backpack with adjustable backrest gap, characterized in that, include: The backpack body (100) is provided with a first pull rope (400) and a second pull rope (500) that can be pulled out. A support plate (200) is slidably installed on the lower back of the backpack body (100). A threaded rod (202) is fixedly connected to the middle of one side of the support plate (200). The backpack body (100) is internally fitted with a rotatable pulley (603). The pulley (603) is threaded onto a threaded rod (202). One end of the first pull rope (400) and one end of the second pull rope (500) are respectively wound and fixed onto the pulley (603). When the first pull rope (400) is pulled, it can drive the pulley (603) to rotate in the forward direction. When the second pull rope (500) is pulled, it can drive the pulley (603) to rotate in the reverse direction. The rotation of the pulley (603) can adjust the distance between the support plate (200) and the backpack body (100).

2. The backpack with adjustable backrest gap according to claim 1, characterized in that: The support plate (200) is slidably mounted on the back of the backpack body (100) in a vertical direction.

3. A backpack with adjustable backrest gap according to claim 2, characterized in that: A fixing block (600) is fixedly installed in the lower inner part of the backpack body (100). Sliding holes (601) are provided on both ends of the fixing block (600). Sliding rods (203) are fixedly connected to both ends of the side of the support plate (200). One end of the sliding rod (203) passes through the backpack body (100) and is slidably installed in the sliding hole (601).

4. A backpack with adjustable backrest gap according to claim 3, characterized in that: The fixing block (600) has a limiting groove (602), and the lower part of the rope wheel (603) is locked in the limiting groove (602).

5. A backpack with adjustable backrest gap according to claim 4, characterized in that: The pulley (603) has a threaded hole (604) in the middle, which can be threaded with the threaded rod (202). One end of the threaded rod (202) has an insertion hole (204), and an iron bar (205) is inserted into the insertion hole (204). The iron bar (205) can prevent the pulley (603) from rotating excessively and disengaging from the threaded rod (202).

6. A backpack with adjustable backrest gap according to claim 1, characterized in that: The backpack body (100) has two shoulder straps (300) with through holes (301) that can communicate with the inside of the backpack body (100). One end of the first pull rope (400) and one end of the second pull rope (500) are respectively inserted into the backpack body (100) through the through holes (301) of the two shoulder straps (300) and fixedly connected to the rope wheel (603).

7. A backpack with adjustable backrest gap according to claim 6, characterized in that: The other end of the first pull rope (400) and the other end of the second pull rope (500) are respectively fixedly connected to a pull ball (501), and the diameter of the pull ball (501) is larger than the diameter of the through hole (301).

8. A backpack with adjustable backrest gap according to claim 1, characterized in that: The pulley (603) is configured with an I-shaped structure.

9. A backpack with adjustable backrest gap according to claim 1, characterized in that: A guide block (700) is fixedly connected inside the backpack body (100). The guide block (700) has a through guide hole (701), and the first pull rope (400) and the second pull rope (500) pass through the guide hole (701) respectively.

Images